Company lists · Data refreshed September 2026

Top 25 Customer contact center companies worldwide

Name: Customer contact center companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 4,790 companies tracked

RevenueBase identified 4,790 customer contact center companies worldwide as of September 2026 and tracks 376,039 professional contacts across them, including 32,495 with verified work emails and 19,367 with mobile numbers. The United States is the largest market and Lahore the largest hub.

This list covers customer contact center companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 2026. Country and city lists for customer contact center companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

4,790Companies

376,039Contacts tracked

32,495Verified emails

19,367Mobile numbers

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The 25 largest customer contact center companies worldwide

Ranked by team size

Top 25 of 4,790 customer contact center companies worldwide, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to customer contact center companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Startek	Partial evidence	San Miguel De Tucuman, AR	10001+	15,081 contacts →
	Partial evidence “A global customer experience (CX) management solutions provider, Startek® delivers best-in-class omnichannel CX, digital transformation and enterprise tech services for leading…” Source: RevenueBase Database · checked Sep 1, 2026
2	Transcom	Partial evidence	HU	10001+	12,969 contacts →
	Partial evidence “Transcom provides digitally enhanced customer experience (CX) services to some of the world's most ambitious brands.” Source: RevenueBase Database · checked Sep 1, 2026
3	Cogent E Services	Partial evidence	Noida, IndiaHQ checked Sep 1, 2026	10001+	7,313 contacts →
	Partial evidence “We are an end-to-end Customer Experience (CX) solutions provider offering omni-channel solutions along various customer interaction touch-points from customer sales and support…” Source: RevenueBase Database · checked Sep 1, 2026
4	Turkcell Global Bilgi	Indirect evidence	Beyoglu, TürkiyeHQ checked Sep 1, 2026	10001+	6,167 contacts →
	Indirect evidence “Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Source: RevenueBase Database · checked Sep 1, 2026
5	Emtelco S.A	Partial evidence	Medellín, ColombiaHQ checked Sep 1, 2026	10001+	4,998 contacts →
	Partial evidence “Maximizamos el valor de cada contacto de las empresas con sus clientes, gestionando los procesos de relacionamiento a través de canales tefónicos, virtuales y presenciales.” Source: RevenueBase Database · checked Sep 1, 2026
6	Call Center Services International	Strong evidence	MX	1,001-5,000	4,548 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 1, 2026
7	Callink	Partial evidence	Uberlandia, BR	5,001-10,000	4,137 contacts →
	Partial evidence “Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Source: RevenueBase Database · checked Sep 1, 2026
8	Raya CX	Partial evidence	Giza, EgyptHQ checked Sep 1, 2026	5,001-10,000	3,989 contacts →
	Partial evidence “RAYA Customer Experience provides next-generation BPO and customer experience management on behalf of clients across various industries.” Source: RevenueBase Database · checked Sep 1, 2026
9	Vikstar Contact Center	Strong evidence	Sao Paulo, BR	10001+	3,912 contacts →
	Strong evidence “Vikstar is one of the biggest contact centers of Brazil.” Source: RevenueBase Database · checked Sep 1, 2026
10	Sercom	Strong evidence	Taboao Da Serra, BR	5,001-10,000	3,788 contacts →
	Strong evidence “Founded in 1993, since the beginning Sercom has stood out in the Contact Center Services.” Source: RevenueBase Database · checked Sep 1, 2026
11	GSS Global Sales Solutions	Indirect evidence	Roma, IT	10001+	3,729 contacts →
	Indirect evidence “is a tech company specialized in providing, and for.” Source: RevenueBase Database · checked Sep 1, 2026
12	Merchants	Partial evidence	Johannesburg, ZA	5,001-10,000	3,583 contacts →
	Partial evidence “Merchants is a leading customer management partner specialising in business process outsourcing (BPO) that delivers customer experience and customer interactions.” Source: RevenueBase Database · checked Sep 1, 2026
13	Teleperformance Global Services	Indirect evidence	Kolkata, IndiaHQ checked Sep 1, 2026	1,001-5,000	3,346 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 1, 2026
14	TMKT	Strong evidence	Poa, BR	5,001-10,000	3,320 contacts →
	Strong evidence “A TMKT é uma empresa de Contact Center que foi fundada em 1991 e se tornou uma referência no mercado de Customer Experience (CX).” Source: RevenueBase Database · checked Sep 1, 2026
15	Quantrics Enterprises INC	Partial evidence	Taytay, PhilippinesHQ checked Sep 1, 2026	5,001-10,000	3,132 contacts →
	Partial evidence “In the Philippines, Quantrics by NQX is redefining customer experience by bringing together the expertise of a global leader and the passion of world-class Filipino talent.” Source: RevenueBase Database · checked Sep 1, 2026
16	Telvista	Strong evidence	Dallas, TX, US	1,001-5,000	3,125 contacts →
	Strong evidence “Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Source: RevenueBase Database · checked Sep 1, 2026
17	EPX Eperformax Contact Centers	Strong evidence	Pasay City, PhilippinesHQ checked Sep 1, 2026	5,001-10,000	3,061 contacts →
	Strong evidence “ePerformax is a high-performing contact center & BPO that provides world-class, omnichannel service and support to a select group of Fortune companies and their customers.” Source: RevenueBase Database · checked Sep 1, 2026
18	TEL Contact Center	Partial evidence	Salvador, BR	5,001-10,000	3,023 contacts →
	Partial evidence “Entre as principais empresas de Gestão do Relacionamento com Cliente (CRM) do Brasil, há mais de 30 anos a Tel inova no desenvolvimento de soluções customizadas, de alto valor…” Source: RevenueBase Database · checked Sep 1, 2026
19	VGX Contact Center	Partial evidence	Belo Horizonte, BR	1,001-5,000	2,938 contacts →
	Partial evidence “A VGX, é uma empresa 100% brasileira, com 13 anos de atuação e mais de 5.100 colaboradores, consolidada como referência em soluções de Customer Experience,Cobrança, Atendimento…” Source: RevenueBase Database · checked Sep 1, 2026
20	Grupo Contax	Strong evidence	Sao Paulo, BR	10001+	2,857 contacts →
	Strong evidence “Líder em Contact Center na América Latina e um dos maiores do mundo em BPO, especializado em soluções para gestão do relacionamento com o consumidor, o Grupo Contax atua de…” Source: RevenueBase Database · checked Sep 1, 2026
21	Advanced Call Center Technologies, LLC	Partial evidence	Johnson City, TN, US	5,001-10,000	2,779 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026
22	Emergia Contact Center	Strong evidence	Madrid, ES	5,001-10,000	2,348 contacts →
	Strong evidence “Emergia is a multinational company specialized in the comprehensive customer relationship management in the field of Interactive Contact Center, the business process outsourcing…” Source: RevenueBase Database · checked Sep 1, 2026
23	Nexa BPO	Strong evidence	Bogotá D.c, ColombiaHQ checked Sep 1, 2026	5,001-10,000	2,342 contacts →
	Strong evidence “Más que un contact center y BPO, somos el partner que asegura que la experiencia de tus clientes sea increíble.” Source: RevenueBase Database · checked Sep 1, 2026
24	Webhelp Onelink	Partial evidence	Curitiba, BR	10001+	2,250 contacts →
	Partial evidence “OneLink is the premier partner in outsourced omnichannel customer experience services.” Source: RevenueBase Database · checked Sep 1, 2026
25	CAT Technologies Argentina	Strong evidence	Miami, FL, US	1,001-5,000	2,211 contacts →
	Strong evidence “Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: customer contact center companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names customer contact center companies.
Partial evidence: Its own public description names part of customer contact center companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer contact center companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 4,790 customer contact center companies worldwide

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Customer contact center companies worldwide at a glance

As of Sep 1, 2026

8.6%Verified-email coverage

5.2%Mobile-number coverage

78.5Average contacts per company

51-200Median size (employees)

2.1%Largest-city concentration · Lahore

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

813

11-50

1,501

51-200

1,282

201-500

542

501-1,000

279

1,001-5,000

262

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among customer contact center companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 32 countries, largest first: the United States, India, Pakistan, the United Kingdom, Brazil, the Philippines, Mexico, Italy, Canada, Germany and 22 more. Country and city lists for customer contact center companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer contact center companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names customer contact center companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among customer contact center companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 32,495 across the full list. 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 between September 1, 2026 and September 14, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Customer contact center companies by location

41 lists · largest first

Every Customer contact center companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names customer contact center companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many customer contact center companies are there worldwide?

RevenueBase identified 4,790 customer contact center companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Startek, headquartered in San Miguel De Tucuman, tops this list with the largest team on record.

Which country has the most customer contact center companies?

The United States leads with 1,065 companies, followed by India (470) and Pakistan (349). Every customer contact center companies list by country and city is linked on this page.

Which city has the most customer contact center companies?

Lahore leads with 101 headquartered companies, followed by Rawalpindi (77) and Sao Paulo (75).

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 32,495 verified decision-maker contacts tracked across these 4,790 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 1, 2026 and September 14, 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 Smart Search, 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.