Company lists · Data refreshed September 2026
Top 25 Omnichannel contact centers worldwide
RevenueBase identified 1,874 omnichannel contact centers worldwide as of September 2026 and tracks 135,205 professional contacts across them, including 15,602 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers omnichannel contact centers 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 omnichannel contact centers 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.
The 25 largest omnichannel contact centers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,934 contacts → | ||||
Indirect evidence “Sinch’s vision is to connect every business with every customer, everywhere in the world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,444 contacts → | ||||
Indirect evidence “8x8, Inc.(NASDAQ: EGHT) believes that CX limits were meant to be shattered.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,026 contacts → | ||||
Indirect evidence “Human-Led, Tech-Powered Customer Service For over 25 years, Liveops has redefined customer support by combining technology with real human connection.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,921 contacts → | ||||
Indirect evidence “Actionline is dedicated to connecting brands with their customers, strengthening their presence and value at every touchpoint.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,762 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,710 contacts → | ||||
Partial 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 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,536 contacts → | ||||
Indirect evidence “DialAmerica is now Aucera.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,453 contacts → | ||||
Indirect evidence “One voice – let us be your voice.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,418 contacts → | ||||
Strong evidence “DATAMARK Inc, a provider of omni-channel contact centers and business process outsourcing (BPO) services since 1989, employs more than at our facilities in the United States…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,312 contacts → | ||||
Strong evidence “A dbm Contact Center foi fundada em 1996 e possui sede própria em Curitiba.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,306 contacts → | ||||
Indirect evidence “At Unisono, for more than 20 years we have been working side by side with our customers across the globe to meet their demands as well as our own.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,234 contacts → | ||||
Indirect evidence “A Parla!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,225 contacts → | ||||
Strong evidence “We deliver tailored Contact Center and Back Office solutions to our strategic partners, leveraging advanced technology and high quality standards to elevate customer experiences…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,076 contacts → | ||||
Indirect evidence “Even the markets know that we’re the good call’!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,071 contacts → | ||||
Indirect evidence “We specialise in inbound multichannel customer support across multiple verticals from our quality, strategically located centres in Fiji, South Africa and Peru and via our work…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,067 contacts → | ||||
Strong evidence “Pentafon is a leading Contact Center & Customer Experience Service Provider (CXSP).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: omnichannel contact centers. 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 omnichannel contact centers.
- Partial evidence
- Its own public description names part of omnichannel contact centers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name omnichannel contact centers. 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 1,874 omnichannel contact centers worldwide
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Omnichannel contact centers worldwide at a glance
As of Sep 29, 2026Companies by employee count
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 omnichannel contact centers, 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 omnichannel contact centers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “omnichannel contact centers”. 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 omnichannel contact centers), 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 omnichannel contact centers, 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, 15,602 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.
Omnichannel contact centers by location
15 lists · largest firstEvery Omnichannel contact centers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Omnichannel contact centers based in the United States296
- Omnichannel contact centers based in Brazil135
- Omnichannel contact centers based in the United Kingdom90
- Omnichannel contact centers based in India83
- Omnichannel contact centers based in Mexico66
- Omnichannel contact centers based in Spain59
- Omnichannel contact centers based in the Netherlands57
- Omnichannel contact centers based in Canada51
- Omnichannel contact centers based in France44
- Omnichannel contact centers based in Germany43
- Omnichannel contact centers based in Italy42
- Omnichannel contact centers based in Argentina33
- Omnichannel contact centers based in Colombia33
- Omnichannel contact centers based in South Africa30
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 omnichannel contact centers, 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 omnichannel contact centers are there worldwide?
RevenueBase identified 1,874 omnichannel contact centers 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?
Afni, INC, headquartered in Bloomington, tops this list with the largest team on record.
Which country has the most omnichannel contact centers?
The United States leads with 296 companies, followed by Brazil (135) and the United Kingdom (90). Every omnichannel contact centers list by country and city is linked on this page.
Which city has the most omnichannel contact centers?
Sao Paulo leads with 34 headquartered companies, followed by London (22) and Madrid (19).
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 15,602 verified decision-maker contacts tracked across these 1,874 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.