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Company lists · Data verified August 2026

Top 25 Contact center as a service providers based in the United States

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 956 companies tracked

There are 956 contact center as a service providers headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 150,617 professional contacts across them, including 21,990 with verified work emails and 23,541 with mobile numbers. Atlanta is the largest hub.

This list covers contact center as a service providers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

956Companies
150,617Contacts tracked
21,990Verified emails
23,541Mobile numbers
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The 25 largest contact center as a service providers based in the United States

Ranked by team size
Top 25 of 956 contact center as a service providers based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#CompanyHQEmployeesContactsVerified emails
1FoundeverMiami, FL10001+30,6973,549
2TTECRockleigh, NJ10001+26,4763,561
3IQORFort Lauderdale, FL10001+17,3011,241
4Startek IndiaDenver, CO10001+4,405347
5VerintChicago, IL5,001-10,0003,8322,312
6VonageHolmdel, NJ1,001-5,0003,5121,736
7TelvistaDallas, TX1,001-5,0003,12539
8Advanced Call Center Technologies, LLCJohnson City, TN5,001-10,0002,779282
9Five9San Ramon, CA1,001-5,0002,5781,583
10CAT Technologies ArgentinaMiami, FL1,001-5,0002,211323
11Infocision Management CorporationAkron, OH1,001-5,0001,773146
12DialamericaMahwah, NJ1,001-5,0001,53750
13Senture, LLCLondon1,001-5,0001,477198
14BroadpathTucson, AZ1,001-5,0001,271218
15MCILas Cruces, NM5,001-10,00097452
16Aspect SoftwareBoulder, CO1,001-5,000877180
17Focus ServicesRoy, UT1,001-5,00079363
18MoneypennyCharleston, SC1,001-5,000538190
19Contactus CommunicationsColumbus, OH1,001-5,00051335
20American Customer CareBristol, CT1,001-5,00051140
21Global ResponseMargate, FL1,001-5,00048933
22TLCXCedar Rapids, IA1,001-5,00045761
23CentrisLongview, TX1,001-5,00036525
24The Connection Contact CenterBurnsville, MN1,001-5,0003536
25Five Star Call CentersSioux Falls, SD1,001-5,00031261

Showing 25 of 956 contact center as a service providers based in the United States

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Contact center as a service providers based in the United States at a glance

As of Aug 28, 2026
11-50Median size (employees)
AtlantaLargest hub · 28 HQs
23,541Contacts with mobile numbers
30Emails re-verified in last 30 days

Companies by employee count

1-10
209
11-50
315
51-200
220
201-500
85
501-1,000
56
1,001-5,000
46
5,001-10,000
12
10001+
12

Contact center as a service providers by metro

MetroCompanies
Contact center as a service providers in Atlanta28
Contact center as a service providers in Miami26
Contact center as a service providers in New York20
Contact center as a service providers in Austin19
Contact center as a service providers in Chicago16
Contact center as a service providers in Phoenix16
Contact center as a service providers in San Francisco15
Contact center as a service providers in San Diego14

How this list was built

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion
Companies whose own business descriptions match “contact center as a service providers”, with match quality audited by blind human judging, and headquartered in the United States.
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
Contact records re-verify on a rolling cadence; 30 contacts on this list were re-verified in the last 30 days.
Refresh
Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many contact center as a service providers are there based in the United States?

There are 956 contact center as a service providers headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Foundever, headquartered in Miami, tops this list with the largest team on record.

Which city has the most contact center as a service providers?

Atlanta leads with 28 headquartered companies, followed by Miami (26) and New York (20).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 21,990 verified decision-maker contacts tracked across these 956 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Related lists

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.

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