Company lists · Data refreshed September 2026

Top 25 Customer contact center operators worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 4,860 companies tracked

RevenueBase identified 4,860 customer contact center operators worldwide as of September 2026 and tracks 275,345 professional contacts across them, including 22,626 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers customer contact center operators 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 28, 2026. Country and city lists for customer contact center operators 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 28, 2026 86% judged on-target in blind review

4,860Companies

275,345Contacts tracked

22,626Verified emails

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The 25 largest customer contact center operators worldwide

Ranked by team size

Top 25 of 4,860 customer contact center operators worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to customer contact center operators: 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	Turkcell Global Bilgi	Indirect evidence	Beyoglu, TürkiyeHQ checked Sep 28, 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 28, 2026
2	Afni, INC	Strong evidence	Bloomington, IL, United StatesHQ checked Sep 28, 2026	10001+	5,553 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
3	Emtelco S.A	Partial evidence	Medellín, ColombiaHQ checked Sep 28, 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 28, 2026
4	Continuum Global Solutions	Strong evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,342 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
5	Brasil Center Comunicações	Indirect evidence	n/a	5,001-10,000	3,979 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
6	Vikstar Contact Center	Strong evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	10001+	3,914 contacts →
	Strong evidence “Vikstar is one of the biggest contact centers of Brazil.” Source: RevenueBase Database · checked Sep 28, 2026
7	Sercom	Strong evidence	Taboão Da Serra, BrazilHQ checked Sep 28, 2026	5,001-10,000	3,785 contacts →
	Strong evidence “Founded in 1993, since the beginning Sercom has stood out in the Contact Center Services.” Source: RevenueBase Database · checked Sep 28, 2026
8	GSS Global Sales Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	10001+	3,716 contacts →
	Indirect evidence “is a tech company specialized in providing, and for.” Source: RevenueBase Database · checked Sep 28, 2026
9	TMKT	Strong evidence	Poa, BrazilHQ checked Sep 28, 2026	5,001-10,000	3,333 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 28, 2026
10	Quantrics Enterprises INC	Partial evidence	Taytay, PhilippinesHQ checked Sep 28, 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 28, 2026
11	Telvista	Strong evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,122 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 28, 2026
12	Extensya	Strong evidence	Amman, JordanHQ checked Sep 28, 2026	1,001-5,000	3,071 contacts →
	Strong evidence “Extensya is a company that primarily specializes in contact management solutions and business process outsourcing services, with a network of fully equipped contact centers in…” Source: RevenueBase Database · checked Sep 28, 2026
13	EPX Eperformax Contact Centers	Strong evidence	Pasay City, PhilippinesHQ checked Sep 28, 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 28, 2026
14	Advanced Call Center Technologies, LLC	Partial evidence	Berwyn, PA, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,774 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 28, 2026
15	Expert Global Solutions NOW Alorica	Indirect evidence	United StatesHQ checked Sep 28, 2026	10001+	2,388 contacts →
	Indirect evidence “Expert Global Solutions is now part of Alorica.” Source: RevenueBase Database · checked Sep 28, 2026
16	Emergia Contact Center	Strong evidence	Barcelona, SpainHQ checked Sep 28, 2026	5,001-10,000	2,358 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 28, 2026
17	Nexa BPO	Strong evidence	Bogotá D.c, ColombiaHQ checked Sep 28, 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 28, 2026
18	CAT Technologies Argentina	Strong evidence	Buenos Aires, ArgentinaHQ checked Sep 28, 2026	1,001-5,000	2,221 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 28, 2026
19	Vemsertahto	Indirect evidence	Goiania, BrazilHQ checked Sep 28, 2026	5,001-10,000	2,176 contacts →
	Indirect evidence “Somos a Tahto, uma empresa referência em soluções de CX e BPO.” Source: RevenueBase Database · checked Sep 28, 2026
20	Infocision Management Corporation	Strong evidence	Akron, OH, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,764 contacts →
	Strong evidence “InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Source: RevenueBase Database · checked Sep 28, 2026
21	Technotask Business Solutions PVT LTD	Partial evidence	Bhopal, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,762 contacts →
	Partial evidence “Transforming Customer Experiences Worldwide** At Technotask, we've embarked on a journey of exponential growth and innovation since our inception in March 2020.” Source: RevenueBase Database · checked Sep 28, 2026
22	Km2 Solutions	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,741 contacts →
	Indirect evidence “Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.” Source: RevenueBase Database · checked Sep 28, 2026
23	Supportninja	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,711 contacts →
	Partial evidence “SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Source: RevenueBase Database · checked Sep 28, 2026
24	Support Services Group	Strong evidence	Waco, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,710 contacts →
	Strong evidence “Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.” Source: RevenueBase Database · checked Sep 28, 2026
25	Sybrid Private Limited	Indirect evidence	Karachi, PakistanHQ checked Sep 28, 2026	1,001-5,000	1,609 contacts →
	Indirect evidence “Sybrid (Pvt) Ltd is Pakistan's leading technology solutions provider, helping businesses optimize their operations and drive growth.” Source: RevenueBase Database · checked Sep 28, 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 operators. 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 operators.
Partial evidence: Its own public description names part of customer contact center operators, 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 operators. 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 4,860 customer contact center operators worldwide

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Customer contact center operators worldwide at a glance

As of Sep 28, 2026

8.2%Verified-email coverage

56.7Average contacts per company

51-200Median size (employees)

1.8%Largest-city concentration · Lahore

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

700

11-50

1,536

51-200

1,415

201-500

578

501-1,000

286

1,001-5,000

253

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 operators, 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: Every country. Country and city lists for customer contact center operators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer contact center operators”. 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 operators), 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 operators, 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, 22,626 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 on September 28, 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 operators by location

21 lists · largest first

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

Countries

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 operators, 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 operators are there worldwide?

RevenueBase identified 4,860 customer contact center operators 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?

Turkcell Global Bilgi, headquartered in Beyoglu, tops this list with the largest team on record.

Which country has the most customer contact center operators?

The United States leads with 700 companies, followed by India (351) and Pakistan (300). Every customer contact center operators list by country and city is linked on this page.

Which city has the most customer contact center operators?

Lahore leads with 86 headquartered companies, followed by Rawalpindi (70) and Islamabad (41).

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 22,626 verified decision-maker contacts tracked across these 4,860 companies.

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 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.