Company lists · Data refreshed September 2026

Top 25 Customer service outsourcing advisors based in the United States

Name: Customer service outsourcing advisors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,636 companies tracked

RevenueBase identified 3,636 company matches for customer service outsourcing advisors associated with the United States as of September 2026 and tracks 437,383 professional contacts across them, including 52,739 with verified work emails. New York is the largest hub.

This list covers company matches for customer service outsourcing advisors 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 28, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

3,636Companies

437,383Contacts tracked

52,739Verified emails

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The 25 largest customer service outsourcing advisors based in the United States

Ranked by team size

Top 25 of 3,636 company matches for customer service outsourcing advisors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Alorica	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	10001+	47,558 contacts →
	Exact match “We’re passionate about creating customers for life by designing experiences that elevate your brand.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Sitel Group	Exact match	Miami, FL, United StatesHQ recorded Sep 28, 2026	10001+	35,365 contacts →
	Exact match “Foundever™ is a global leader in the customer experience (CX) industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	TTEC	Exact match	Austin, TX, United StatesHQ recorded Sep 28, 2026	10001+	26,420 contacts →
	Exact match “We’re TTEC (pronounced t.tec).” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	HGS	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	10001+	24,115 contacts →
	Exact match “HGS is a global provider of technology, AI, and business services, helping organizations transform with confidence.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	IQOR	Exact match	Fort Lauderdale, FL, United StatesHQ recorded Sep 28, 2026	10001+	17,310 contacts →
	Exact match “iQor is a trusted partner in customer experience solutions for global brands and a portfolio company of Mill Point Capital.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	IBEX	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	10001+	15,457 contacts →
	Exact match “ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	VXI Global Solutions	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 28, 2026	10001+	14,238 contacts →
	Exact match “About VXI Global Solutions VXI Global Solutions is a BPO leader in customer service, customer experience, and digital solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Slalom	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	10001+	10,032 contacts →
	Exact match “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Everise	Exact match	Plantation, FL, United StatesHQ recorded Sep 28, 2026	10001+	5,863 contacts →
	Exact match “Everise delivers happiness to millions of customers around the world.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Qualfon	Exact match	Highland Park, MI, United StatesHQ recorded Sep 28, 2026	10001+	5,840 contacts →
	Exact match “Qualfon provides 360 degrees of customer experience support for your business with mission-driven processes that keep each person at the heart of every interaction.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Afni, INC	Exact match	Bloomington, IL, United StatesHQ recorded Sep 28, 2026	10001+	5,553 contacts →
	Exact match “When people reach for their phones, use laptops, or grab their tablets, Afni's contact center teams are there to provide prompt and friendly help.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Fusion CX	Exact match	Norcross, GA, United StatesHQ recorded Sep 28, 2026	10001+	4,785 contacts →
	Exact match “At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Call Center Services International	Exact match	San Diego, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	4,561 contacts →
	Exact match “CCSI specializes in high‑performance, cost‑efficient contact center solutions supported by a world‑class bilingual workforce and state‑of‑the‑art infrastructure in Mexico.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Continuum Global Solutions	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	5,001-10,000	4,342 contacts →
	Exact match “With a fresh name and decades of contact center expertise, we’re dedicated to collaborative partnerships, understanding your unique needs, and tailoring solutions for an enhanced…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Harte Hanks	Exact match	Chelmsford, MA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,901 contacts →
	Exact match “We are The Customer Company®, a global leader in Customer Experience (CX), Omnichannel Marketing, Data Services, Customer Care, Fulfillment, and Logistics.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Ubiquity	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	10001+	3,396 contacts →
	Exact match “Recognized as the #1 CX provider for disruptors and innovators across financial services, healthcare, and e-commerce, Ubiquity was founded on the belief that our clients and their…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Concentrix Limited Company	Exact match	Newark, CA, United StatesHQ recorded Sep 28, 2026	10001+	3,369 contacts →
	Exact match “Concentrix, Corporation (Nasdaq: CNXC), a top provider of customer experience (CX) solutions and technology, helps some of the best businesses in the world, including over 100…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Telvista	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,122 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 28, 2026 · View company records in RevenueBase
19	Etech Global Services	Exact match	Nacogdoches, TX, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,964 contacts →
	Exact match “Etech Global Services delivers customer experience solutions and proprietary AI technology to Fortune 500 companies across telecommunications, healthcare, financial services, and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Advanced Call Center Technologies, LLC	Exact match	Berwyn, PA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	2,774 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 28, 2026 · View company records in RevenueBase
21	Stream Global Services	Exact match	Eagan, MN, United StatesHQ recorded Sep 28, 2026	10001+	2,772 contacts →
	Exact match “Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Five9	Exact match	San Ramon, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,584 contacts →
	Exact match “Five9 provides a comprehensive suite of CX solutions, powered by Five9 Genius AI, to elevate customer experiences that deliver better business outcomes in the era of The New CX.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Enshored	Exact match	Signal Hill, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,247 contacts →
	Exact match “Enshored powers the growth of ambitious high growth companies by delivering and managing teams of elite outsourcers.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Second To None	Exact match	Ann Arbor, MI, United StatesHQ recorded Sep 28, 2026	n/a	2,101 contacts →
	Exact match “Your customers are human.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Alta Resources	Exact match	Neenah, WI, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,046 contacts →
	Exact match “Alta Resources has always worked to be something different.” Recorded in the RevenueBase company graph · Sep 28, 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 outsourcing advisors”. 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 3,636 customer service outsourcing advisors based in the United States

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Customer service outsourcing advisors based in the United States at a glance

As of Sep 28, 2026

12.1%Verified-email coverage

120.3Average contacts per company

11-50Median size (employees)

4.5%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,229

11-50

1,069

51-200

712

201-500

288

501-1,000

131

1,001-5,000

148

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,636 companies.

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 outsourcing advisors” 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 52,739 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 28, 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.

Customer service outsourcing advisors by metro

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 outsourcing advisors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer service outsourcing advisors are there based in the United States?

RevenueBase identified 3,636 company matches for customer service outsourcing advisors 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?

Alorica tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most customer service outsourcing advisors?

New York leads with 163 company records, followed by Miami (91) and Houston (77).

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 52,739 professional contacts with verified work emails tracked across these 3,636 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 28, 2026.

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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.