Company lists · Data refreshed September 2026
Top 25 Customer service call centers based in the United States
RevenueBase identified 656 company matches for customer service call centers associated with the United States as of September 2026 and tracks 47,132 professional contacts across them, including 4,048 with verified work emails and 9,120 with mobile numbers. Houston is the largest hub.
This list covers company matches for customer service call centers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 1, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest customer service call centers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,405 contacts → | ||||
Exact match “Startek is a leading global provider of technology-enabled business process outsourcing solutions.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 2 | 3,125 contacts → | ||||
Exact match “Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 3 | 2,779 contacts → | ||||
Exact match “Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 4 | 2,211 contacts → | ||||
Exact match “Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 5 | 1,773 contacts → | ||||
Exact match “InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 6 | 1,695 contacts → | ||||
Exact match “SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 7 | 1,537 contacts → | ||||
Exact match “DialAmerica is now Aucera.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 8 | 1,512 contacts → | ||||
Exact match “At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 9 | 1,477 contacts → | ||||
Exact match “Senture provides comprehensive contact center service support nationally.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 10 | 1,044 contacts → | ||||
Exact match “Valor Global is a global leader in providing extraordinary customer experiences for clients across the globe.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 11 | 974 contacts → | ||||
Exact match “MCI is a global leader in tech-enabled business services, simplifying contact center outsourcing for brands worldwide.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 12 | 905 contacts → | ||||
Exact match “Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 13 | 892 contacts → | ||||
Exact match “If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 14 | 838 contacts → | ||||
Exact match “CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 15 | 762 contacts → | ||||
Exact match “Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 16 | 542 contacts → | ||||
Exact match “We are customer service experts.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 17 | 513 contacts → | ||||
Exact match “ContactUs Communications is a U.S.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 18 | 508 contacts → | ||||
Exact match “Coast is a top-performing call center services company that specializes in onshore omni-channel solutions, accounts receivable management, and back-office functions for public and…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 19 | 478 contacts → | ||||
Exact match “OneSupport is a leading provider of customer experience, technical support, and sales enablement solutions for technology products and services.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 20 | 452 contacts → | ||||
Exact match “SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention |…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 21 | 429 contacts → | ||||
Exact match “About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 22 | 353 contacts → | ||||
Exact match “For over 35 years, The Connection has made a name for ourselves becoming one of the top industry partners to Fortune 500 companies looking to outsource their contact center…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 23 | 254 contacts → | ||||
Exact match “Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 24 | 235 contacts → | ||||
Exact match “CONTACT CENTER SERVICES INNOVATIVE, HIGH-PERFORMANCE SOLUTIONS THAT WORK Mass Markets executes domestic omni-channel, inbound and outbound contact center services on behalf of…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 25 | 191 contacts → | ||||
Exact match “With nine call centers located in America, El Salvador, Nicaragua, the Dominican Republic and the Philippines, Bernard works with some of America's largest companies to provide…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “customer service call centers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 656 customer service call centers based in the United States
See the full list, filter by size, metro and specialty, and access 4,048 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Customer service call centers based in the United States at a glance
As of Sep 1, 2026Companies by employee count
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “customer service call centers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 4,048 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “customer service call centers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many customer service call centers are there based in the United States?
RevenueBase identified 656 company matches for customer service call centers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Startek India tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most customer service call centers?
Houston leads with 17 company records, followed by Miami (14) and Los Angeles (12).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,048 professional contacts with verified work emails tracked across these 656 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.
Ready to reach these companies? Verified emails and direct dials for all 656 customer service call centers based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Customer service call centers by geography
- Customer service call centers based in Italy
- Customer service call centers based in Brazil
- Customer service call centers based in Germany
- Customer service call centers based in the United Kingdom
- Customer service call centers based in Canada
- Customer service call centers based in Mexico
- Customer service call centers based in Spain
- Customer service call centers based in France
- Customer service call centers based in the Netherlands
- Customer service call centers based in Poland
- Customer service call centers based in London, United Kingdom
- Customer service call centers based in Argentina
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Customer service call centers based in Italy
- Customer service call centers based in Brazil
- Customer service call centers based in Germany
- Customer service call centers based in the United Kingdom
- Customer service call centers based in Canada
- Customer service call centers based in Mexico
Company intelligence · public preview
Top 25 customer service call centers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 656 matching company records for customer service call centers based in the United States, with 47,132 tracked contacts and 4,048 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 1, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 customer service call centers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Startek Indiastartek.comHQ: HQ not recorded; location: Denver, CO, United StatesReported employees: 10001+ | HQ not recorded; location: Denver, CO, United States | 10001+ | Exact match | 4,405 contacts → |
“Startek is a leading global provider of technology-enabled business process outsourcing solutions.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Telvistatelvista.comHQ: HQ not recorded; location: Dallas, TX, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Dallas, TX, United States | 1,001-5,000 | Exact match | 3,125 contacts → |
“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Advanced Call Center Technologies, LLCacttoday.comHQ: HQ not recorded; location: Johnson City, TN, United StatesReported employees: 5,001-10,000 | HQ not recorded; location: Johnson City, TN, United States | 5,001-10,000 | Exact match | 2,779 contacts → |
“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  CAT Technologies Argentinacat-technologies.comHQ: HQ not recorded; location: Miami, FL, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Miami, FL, United States | 1,001-5,000 | Exact match | 2,211 contacts → |
“Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Infocision Management Corporationinfocision.comHQ: HQ not recorded; location: Akron, OH, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Akron, OH, United States | 1,001-5,000 | Exact match | 1,773 contacts → |
“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Supportninjasupportninja.comHQ: HQ not recorded; location: Austin, TX, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Austin, TX, United States | 1,001-5,000 | Exact match | 1,695 contacts → |
“SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Dialamericaaucera.comHQ: HQ not recorded; location: Mahwah, NJ, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Mahwah, NJ, United States | 1,001-5,000 | Exact match | 1,537 contacts → |
“DialAmerica is now Aucera.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  RDI Corporationrdicorp.comHQ: HQ not recorded; location: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Cincinnati, OH, United States | 1,001-5,000 | Exact match | 1,512 contacts → |
“At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Senture, LLCsenture.comHQ: HQ not recorded; location: London, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: London, United States | 1,001-5,000 | Exact match | 1,477 contacts → |
“Senture provides comprehensive contact center service support nationally.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Valor Globalvalorglobal.comHQ: HQ not recorded; location: Scottsdale, AZ, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Scottsdale, AZ, United States | 1,001-5,000 | Exact match | 1,044 contacts → |
“Valor Global is a global leader in providing extraordinary customer experiences for clients across the globe.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  MCImci.worldHQ: HQ not recorded; location: Las Cruces, NM, United StatesReported employees: 5,001-10,000 | HQ not recorded; location: Las Cruces, NM, United States | 5,001-10,000 | Exact match | 974 contacts → |
“MCI is a global leader in tech-enabled business services, simplifying contact center outsourcing for brands worldwide.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Inktel Contact Center Solutionsinktel.comHQ: HQ not recorded; location: Doral, FL, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Doral, FL, United States | 1,001-5,000 | Exact match | 905 contacts → |
“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Answernetanswernet.comHQ: HQ not recorded; location: Horsham, PA, United StatesReported employees: 501-1,000 | HQ not recorded; location: Horsham, PA, United States | 501-1,000 | Exact match | 892 contacts → |
“If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  CBE Companiescbecompanies.comHQ: HQ not recorded; location: Waterloo, IA, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Waterloo, IA, United States | 1,001-5,000 | Exact match | 838 contacts → |
“CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Sequential Technology Internationalsequentialtech.comHQ: HQ not recorded; location: Bethlehem, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Bethlehem, United States | 1,001-5,000 | Exact match | 762 contacts → |
“Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Global Contact Services GCSgcsagents.comHQ: HQ not recorded; location: Yuma, AZ, United StatesReported employees: 501-1,000 | HQ not recorded; location: Yuma, AZ, United States | 501-1,000 | Exact match | 542 contacts → |
“We are customer service experts.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Contactus Communicationscusc.comHQ: HQ not recorded; location: Columbus, OH, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Columbus, OH, United States | 1,001-5,000 | Exact match | 513 contacts → |
“ContactUs Communications is a U.S.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Coast Professional, INCcoastprofessional.comHQ: HQ not recorded; location: West Monroe, LA, United StatesReported employees: 501-1,000 | HQ not recorded; location: West Monroe, LA, United States | 501-1,000 | Exact match | 508 contacts → |
“Coast is a top-performing call center services company that specializes in onshore omni-channel solutions, accounts receivable management, and back-office functions for public and…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Onesupportonesupport.comHQ: HQ not recorded; location: San Marcos, TX, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: San Marcos, TX, United States | 1,001-5,000 | Exact match | 478 contacts → |
“OneSupport is a leading provider of customer experience, technical support, and sales enablement solutions for technology products and services.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Supportzebrasupportzebra.comHQ: HQ not recorded; location: Houston, TX, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Houston, TX, United States | 1,001-5,000 | Exact match | 452 contacts → |
“SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention |…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Ansafone Contact Centersansafone.comHQ: HQ not recorded; location: Ocala, FL, United StatesReported employees: 501-1,000 | HQ not recorded; location: Ocala, FL, United States | 501-1,000 | Exact match | 429 contacts → |
“About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  The Connection Contact Centertheconnectioncc.comHQ: HQ not recorded; location: Burnsville, MN, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Burnsville, MN, United States | 1,001-5,000 | Exact match | 353 contacts → |
“For over 35 years, The Connection has made a name for ourselves becoming one of the top industry partners to Fortune 500 companies looking to outsource their contact center…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Boomsourcingboomsourcing.comHQ: HQ not recorded; location: Lehi, UT, United StatesReported employees: 501-1,000 | HQ not recorded; location: Lehi, UT, United States | 501-1,000 | Exact match | 254 contacts → |
“Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Mass Marketsmassmarkets.comHQ: HQ not recorded; location: West Des Moines, IA, United StatesReported employees: 501-1,000 | HQ not recorded; location: West Des Moines, IA, United States | 501-1,000 | Exact match | 235 contacts → |
“CONTACT CENTER SERVICES INNOVATIVE, HIGH-PERFORMANCE SOLUTIONS THAT WORK Mass Markets executes domestic omni-channel, inbound and outbound contact center services on behalf of…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  American Supportbernardbpo.comHQ: HQ not recorded; location: Jacksonville, FL, United StatesReported employees: 501-1,000 | HQ not recorded; location: Jacksonville, FL, United States | 501-1,000 | Exact match | 191 contacts → |
“With nine call centers located in America, El Salvador, Nicaragua, the Dominican Republic and the Philippines, Bernard works with some of America's largest companies to provide…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 656 company matches
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Customer service call centers: dataset insights
September 1, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
653 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 1, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for customer service call centers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many customer service call centers did RevenueBase find based in the United States?
The saved snapshot records 656 matching company records, 47,132 tracked contacts and 4,048 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 1, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Customer service call centers by geography
- Customer service call centers based in Italy
- Customer service call centers based in Brazil
- Customer service call centers based in Germany
- Customer service call centers based in the United Kingdom
- Customer service call centers based in Canada
- Customer service call centers based in Mexico
- Customer service call centers based in Spain
- Customer service call centers based in France
- Customer service call centers based in the Netherlands
- Customer service call centers based in Poland
- Customer service call centers based in London, United Kingdom
- Customer service call centers based in Argentina
Cite this list
RevenueBase Data Team. Top 25 customer service call centers based in the United States. Snapshot: September 1, 2026. https://revenuebase.ai/companies/customer-service-call-centers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Customer service call centers based in Italy
- Customer service call centers based in Brazil
- Customer service call centers based in Germany
- Customer service call centers based in the United Kingdom
- Customer service call centers based in Canada
- Customer service call centers based in Mexico
Company intelligence · public preview
Top 25 customer service call centers based in the United States
RevenueBase records 656 matching company records for customer service call centers based in the United States, with 47,132 tracked contacts and 4,048 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 1, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 customer service call centers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Startek Indiastartek.com HQ: HQ not recorded; location: Denver, CO, United StatesReported employees: 10001+ | HQ not recorded; location: Denver, CO, United States | 10001+ | Exact match | 4,405 contacts → |
“Startek is a leading global provider of technology-enabled business process outsourcing solutions.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Telvistatelvista.com HQ: HQ not recorded; location: Dallas, TX, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Dallas, TX, United States | 1,001-5,000 | Exact match | 3,125 contacts → |
“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Advanced Call Center Technologies, LLCacttoday.com HQ: HQ not recorded; location: Johnson City, TN, United StatesReported employees: 5,001-10,000 | HQ not recorded; location: Johnson City, TN, United States | 5,001-10,000 | Exact match | 2,779 contacts → |
“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | CAT Technologies Argentinacat-technologies.com HQ: HQ not recorded; location: Miami, FL, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Miami, FL, United States | 1,001-5,000 | Exact match | 2,211 contacts → |
“Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Infocision Management Corporationinfocision.com HQ: HQ not recorded; location: Akron, OH, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Akron, OH, United States | 1,001-5,000 | Exact match | 1,773 contacts → |
“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Supportninjasupportninja.com HQ: HQ not recorded; location: Austin, TX, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Austin, TX, United States | 1,001-5,000 | Exact match | 1,695 contacts → |
“SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Dialamericaaucera.com HQ: HQ not recorded; location: Mahwah, NJ, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Mahwah, NJ, United States | 1,001-5,000 | Exact match | 1,537 contacts → |
“DialAmerica is now Aucera.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | RDI Corporationrdicorp.com HQ: HQ not recorded; location: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Cincinnati, OH, United States | 1,001-5,000 | Exact match | 1,512 contacts → |
“At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Senture, LLCsenture.com HQ: HQ not recorded; location: London, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: London, United States | 1,001-5,000 | Exact match | 1,477 contacts → |
“Senture provides comprehensive contact center service support nationally.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Valor Globalvalorglobal.com HQ: HQ not recorded; location: Scottsdale, AZ, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Scottsdale, AZ, United States | 1,001-5,000 | Exact match | 1,044 contacts → |
“Valor Global is a global leader in providing extraordinary customer experiences for clients across the globe.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | MCImci.world HQ: HQ not recorded; location: Las Cruces, NM, United StatesReported employees: 5,001-10,000 | HQ not recorded; location: Las Cruces, NM, United States | 5,001-10,000 | Exact match | 974 contacts → |
“MCI is a global leader in tech-enabled business services, simplifying contact center outsourcing for brands worldwide.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Inktel Contact Center Solutionsinktel.com HQ: HQ not recorded; location: Doral, FL, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Doral, FL, United States | 1,001-5,000 | Exact match | 905 contacts → |
“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Answernetanswernet.com HQ: HQ not recorded; location: Horsham, PA, United StatesReported employees: 501-1,000 | HQ not recorded; location: Horsham, PA, United States | 501-1,000 | Exact match | 892 contacts → |
“If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | CBE Companiescbecompanies.com HQ: HQ not recorded; location: Waterloo, IA, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Waterloo, IA, United States | 1,001-5,000 | Exact match | 838 contacts → |
“CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Sequential Technology Internationalsequentialtech.com HQ: HQ not recorded; location: Bethlehem, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Bethlehem, United States | 1,001-5,000 | Exact match | 762 contacts → |
“Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Global Contact Services GCSgcsagents.com HQ: HQ not recorded; location: Yuma, AZ, United StatesReported employees: 501-1,000 | HQ not recorded; location: Yuma, AZ, United States | 501-1,000 | Exact match | 542 contacts → |
“We are customer service experts.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Contactus Communicationscusc.com HQ: HQ not recorded; location: Columbus, OH, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Columbus, OH, United States | 1,001-5,000 | Exact match | 513 contacts → |
“ContactUs Communications is a U.S.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Coast Professional, INCcoastprofessional.com HQ: HQ not recorded; location: West Monroe, LA, United StatesReported employees: 501-1,000 | HQ not recorded; location: West Monroe, LA, United States | 501-1,000 | Exact match | 508 contacts → |
“Coast is a top-performing call center services company that specializes in onshore omni-channel solutions, accounts receivable management, and back-office functions for public and…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Onesupportonesupport.com HQ: HQ not recorded; location: San Marcos, TX, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: San Marcos, TX, United States | 1,001-5,000 | Exact match | 478 contacts → |
“OneSupport is a leading provider of customer experience, technical support, and sales enablement solutions for technology products and services.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Supportzebrasupportzebra.com HQ: HQ not recorded; location: Houston, TX, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Houston, TX, United States | 1,001-5,000 | Exact match | 452 contacts → |
“SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention |…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Ansafone Contact Centersansafone.com HQ: HQ not recorded; location: Ocala, FL, United StatesReported employees: 501-1,000 | HQ not recorded; location: Ocala, FL, United States | 501-1,000 | Exact match | 429 contacts → |
“About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | The Connection Contact Centertheconnectioncc.com HQ: HQ not recorded; location: Burnsville, MN, United StatesReported employees: 1,001-5,000 | HQ not recorded; location: Burnsville, MN, United States | 1,001-5,000 | Exact match | 353 contacts → |
“For over 35 years, The Connection has made a name for ourselves becoming one of the top industry partners to Fortune 500 companies looking to outsource their contact center…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Boomsourcingboomsourcing.com HQ: HQ not recorded; location: Lehi, UT, United StatesReported employees: 501-1,000 | HQ not recorded; location: Lehi, UT, United States | 501-1,000 | Exact match | 254 contacts → |
“Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Mass Marketsmassmarkets.com HQ: HQ not recorded; location: West Des Moines, IA, United StatesReported employees: 501-1,000 | HQ not recorded; location: West Des Moines, IA, United States | 501-1,000 | Exact match | 235 contacts → |
“CONTACT CENTER SERVICES INNOVATIVE, HIGH-PERFORMANCE SOLUTIONS THAT WORK Mass Markets executes domestic omni-channel, inbound and outbound contact center services on behalf of…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | American Supportbernardbpo.com HQ: HQ not recorded; location: Jacksonville, FL, United StatesReported employees: 501-1,000 | HQ not recorded; location: Jacksonville, FL, United States | 501-1,000 | Exact match | 191 contacts → |
“With nine call centers located in America, El Salvador, Nicaragua, the Dominican Republic and the Philippines, Bernard works with some of America's largest companies to provide…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Customer service call centers: dataset insights
September 1, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
653 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 1, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for customer service call centers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many customer service call centers did RevenueBase find based in the United States?
The saved snapshot records 656 matching company records, 47,132 tracked contacts and 4,048 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 1, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Customer service call centers by geography
- Customer service call centers based in Italy
- Customer service call centers based in Brazil
- Customer service call centers based in Germany
- Customer service call centers based in the United Kingdom
- Customer service call centers based in Canada
- Customer service call centers based in Mexico
- Customer service call centers based in Spain
- Customer service call centers based in France
- Customer service call centers based in the Netherlands
- Customer service call centers based in Poland
- Customer service call centers based in London, United Kingdom
- Customer service call centers based in Argentina
Cite this list
RevenueBase Data Team. Top 25 customer service call centers based in the United States. Snapshot: September 1, 2026. https://revenuebase.ai/companies/customer-service-call-centers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Customer service call centers based in Italy
- Customer service call centers based in Brazil
- Customer service call centers based in Germany
- Customer service call centers based in the United Kingdom
- Customer service call centers based in Canada
- Customer service call centers based in Mexico