Company lists · Data refreshed September 2026

Top 25 Outbound contact center providers worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 10,506 companies tracked

RevenueBase identified 10,506 outbound contact center providers worldwide as of September 2026 and tracks 497,825 professional contacts across them, including 40,020 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers outbound contact center providers 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 29, 2026. Country and city lists for outbound contact center providers 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 29, 2026 86% judged on-target in blind review

10,506Companies

497,825Contacts tracked

40,020Verified emails

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The 25 largest outbound contact center providers worldwide

Ranked by team size

Top 25 of 10,506 outbound contact center providers worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to outbound contact center providers: 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	Konecta	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	10001+	23,763 contacts →
	Indirect evidence “Konecta is a leading innovative global service provider in customer management business process outsourcing, with passionate employees working in 40 languages across 4 continents…” Source: RevenueBase Database · checked Sep 29, 2026
2	Ienergizer	Indirect evidence	Noida, IndiaHQ checked Sep 29, 2026	10001+	14,745 contacts →
	Indirect evidence “iEnergizer is a leading Business Process Outsourcing provider (“BPO”) of customer management solutions dedicated to delivering performance while actively supporting and advocating…” Source: RevenueBase Database · checked Sep 29, 2026
3	VXI Global Solutions	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	10001+	14,238 contacts →
	Indirect evidence “About VXI Global Solutions VXI Global Solutions is a BPO leader in customer service, customer experience, and digital solutions.” Source: RevenueBase Database · checked Sep 29, 2026
4	Intelcia	Indirect evidence	Casablanca, MoroccoHQ checked Sep 29, 2026	10001+	13,214 contacts →
	Indirect evidence “Intelcia is a global player in outsourcing, which has supported its clients for 20 years combining talents, technologies, and processes to offer a tailor-made service and skills…” Source: RevenueBase Database · checked Sep 29, 2026
5	Afni, INC	Strong evidence	Bloomington, IL, United StatesHQ checked Sep 29, 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 29, 2026
6	Call Center Services International	Strong evidence	San Diego, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	4,561 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 29, 2026
7	Apex America	Indirect evidence	Córdoba, ArgentinaHQ checked Sep 29, 2026	10001+	4,377 contacts →
	Indirect evidence “At Apex America, we are a Next Generation BPO and a global strategic partner specialized in elevating customer service standards.” Source: RevenueBase Database · checked Sep 29, 2026
8	Mindbridge	Indirect evidence	Lahore, PakistanHQ checked Sep 29, 2026	5,001-10,000	4,359 contacts →
	Indirect evidence “Founded in 2004, Mindbridge (Private) Limited is Pakistan’s largest BPO company, operating with a capacity.” Source: RevenueBase Database · checked Sep 29, 2026
9	Continuum Global Solutions	Strong evidence	Dallas, TX, United StatesHQ checked Sep 29, 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 29, 2026
10	Ibex. Pakistan	Indirect evidence	Karachi, PakistanHQ checked Sep 29, 2026	10001+	4,161 contacts →
	Indirect evidence “ibex.” Source: RevenueBase Database · checked Sep 29, 2026
11	Callink	Partial evidence	Uberlândia, BrazilHQ checked Sep 29, 2026	5,001-10,000	4,126 contacts →
	Partial evidence “Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Source: RevenueBase Database · checked Sep 29, 2026
12	Raya CX	Indirect evidence	Giza, EgyptHQ checked Sep 29, 2026	5,001-10,000	3,989 contacts →
	Indirect evidence “RAYA Customer Experience provides next-generation BPO and customer experience management on behalf of clients across various industries.” Source: RevenueBase Database · checked Sep 29, 2026
13	Brasil Center Comunicações	Indirect evidence	n/a	5,001-10,000	3,979 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
14	Vikstar Contact Center	Strong evidence	Sao Paulo, BrazilHQ checked Sep 29, 2026	10001+	3,914 contacts →
	Strong evidence “Vikstar is one of the biggest contact centers of Brazil.” Source: RevenueBase Database · checked Sep 29, 2026
15	Sercom	Strong evidence	Taboão Da Serra, BrazilHQ checked Sep 29, 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 29, 2026
16	Merchants	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 29, 2026	5,001-10,000	3,654 contacts →
	Indirect 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 29, 2026
17	TMKT	Strong evidence	Poa, BrazilHQ checked Sep 29, 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 29, 2026
18	Quantrics Enterprises INC	Indirect evidence	Taytay, PhilippinesHQ checked Sep 29, 2026	5,001-10,000	3,132 contacts →
	Indirect 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 29, 2026
19	Telvista	Partial evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,122 contacts →
	Partial 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 29, 2026
20	Extensya	Strong evidence	Amman, JordanHQ checked Sep 29, 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 29, 2026
21	EPX Eperformax Contact Centers	Strong evidence	Pasay City, PhilippinesHQ checked Sep 29, 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 29, 2026
22	VGX Contact Center	Indirect evidence	Montes Claros, BrazilHQ checked Sep 29, 2026	1,001-5,000	2,951 contacts →
	Indirect 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 29, 2026
23	Grupo Contax	Strong evidence	São Paulo, BrazilHQ checked Sep 29, 2026	10001+	2,859 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 29, 2026
24	Advanced Call Center Technologies, LLC	Partial evidence	Berwyn, PA, United StatesHQ checked Sep 29, 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 29, 2026
25	Stream Global Services	Indirect evidence	Eagan, MN, United StatesHQ checked Sep 29, 2026	10001+	2,772 contacts →
	Indirect evidence “Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Source: RevenueBase Database · checked Sep 29, 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: outbound contact center providers. 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 outbound contact center providers.
Partial evidence: Its own public description names part of outbound contact center providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outbound contact center providers. 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 10,506 outbound contact center providers worldwide

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Outbound contact center providers worldwide at a glance

As of Sep 29, 2026

8.0%Verified-email coverage

47.4Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Lahore

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

2,195

11-50

3,576

51-200

2,669

201-500

1,035

501-1,000

465

1,001-5,000

404

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 outbound contact center providers, 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 outbound contact center providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “outbound contact center providers”. 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 outbound contact center providers), 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 outbound contact center providers, 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, 40,020 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 29, 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.

Outbound contact center providers by location

51 lists · largest first

Every Outbound contact center providers 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 outbound contact center providers, 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 outbound contact center providers are there worldwide?

RevenueBase identified 10,506 outbound contact center providers 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?

Konecta, headquartered in Madrid, tops this list with the largest team on record.

Which country has the most outbound contact center providers?

The United States leads with 1,720 companies, followed by India (827) and Pakistan (651). Every outbound contact center providers list by country and city is linked on this page.

Which city has the most outbound contact center providers?

Lahore leads with 170 headquartered companies, followed by Rawalpindi (148) and Karachi (109).

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 40,020 verified decision-maker contacts tracked across these 10,506 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 29, 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.