Company lists · Data refreshed November 2026

Top 25 Phone support centers worldwide

RevenueBase identified 4,530 company matches for phone support centers worldwide as of November 2026 and tracks 204,656 professional contacts across them, including 20,058 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers company matches for phone support centers worldwide, 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 November 6, 2026. Country and city lists for phone support centers follow the table.

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 Nov 6, 2026 How this list was built
4,530Companies
204,656Contacts tracked
20,058Verified emails
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The 25 largest phone support centers worldwide

Ranked by team size
Top 25 of 4,530 company matches for phone support centers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCorsico, ItalyHQ recorded Nov 6, 202610001+10,448 contacts →

Exact match

“We're KONECTA now!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBloomington, United StatesHQ recorded Nov 6, 202610001+6,716 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMedellín, ColombiaHQ recorded Nov 6, 202610001+6,207 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchDallas, TX, United StatesHQ recorded Nov 6, 20265,001-10,0004,798 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSao Paulo, BrazilHQ recorded Nov 6, 202610001+4,363 contacts →

Exact match

“Vikstar is one of the biggest contact centers of Brazil.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Nov 6, 202610001+4,355 contacts →

Exact match

“is a tech company specialized in providing, and for.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchTaboão Da Serra, BrazilHQ recorded Nov 6, 20265,001-10,0004,283 contacts →

Exact match

“Founded in 1993, since the beginning Sercom has stood out in the Contact Center Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPasay City, PhilippinesHQ recorded Nov 6, 20265,001-10,0003,904 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchTaytay, PhilippinesHQ recorded Nov 6, 20265,001-10,0003,611 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDallas, TX, United StatesHQ recorded Nov 6, 20261,001-5,0003,517 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchEagan, BC, United StatesHQ recorded Nov 6, 202610001+3,230 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 · Nov 6, 2026 · View company records in RevenueBase
12Exact matchn/a5,001-10,0003,221 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBerwyn, PA, United StatesHQ recorded Nov 6, 20265,001-10,0003,116 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchUnited StatesHQ recorded Nov 6, 202610001+2,823 contacts →

Exact match

“Expert Global Solutions is now part of Alorica.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 2026n/a2,072 contacts →

Exact match

“Human-Led, Tech-Powered Customer Service Liveops helps enterprise brands deliver flexible customer service that builds trust, strengthens loyalty, and adapts to changing demand.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20261,001-5,0002,070 contacts →

Exact match

“SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWaco, United StatesHQ recorded Nov 6, 20265,001-10,0002,055 contacts →

Exact match

“Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAkron, OH, United StatesHQ recorded Nov 6, 20261,001-5,0001,947 contacts →

Exact match

“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBoca Raton, United StatesHQ recorded Nov 6, 20265,001-10,0001,921 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBhopal, IndiaHQ recorded Nov 6, 20261,001-5,0001,917 contacts →

Exact match

“Transforming Customer Experiences Worldwide** At Technotask, we've embarked on a journey of exponential growth and innovation since our inception in March 2020.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchKarachi, NY, PakistanHQ recorded Nov 6, 20261,001-5,0001,679 contacts →

Exact match

“Sybrid (Pvt) Ltd is Pakistan's leading technology solutions provider, helping businesses optimize their operations and drive growth.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchAuckland, New ZealandHQ recorded Nov 6, 20261,001-5,0001,645 contacts →

Exact match

“Need help?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 20261,001-5,0001,615 contacts →

Exact match

“At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSão Luís, BrazilHQ recorded Nov 6, 20261,001-5,0001,328 contacts →

Exact match

“Em 19 anos de mercado, a Logos tem ampla experiência nas áreas de Atendimento Presencial e Teleatendimento.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSt Petersburg, RussiaHQ recorded Nov 6, 20261,001-5,0001,318 contacts →

Exact match

“The Office Gurus (TOG) is a global call center and business process outsource provider of customer care, telemarketing, lead generation, appointment setting, order entry, accounts…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 4,530 phone support centers worldwide

See the full list, filter by size, metro and specialty, and access 20,058 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Phone support centers worldwide at a glance

As of Nov 6, 2026
9.8%Verified-email coverage
45.2Average contacts per company
11-50Median size (employees)
2.6%Largest-city concentration · Lahore
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,018
11-50
1,559
51-200
1,115
201-500
400
501-1,000
178
1,001-5,000
132
5,001-10,000
36
10001+
27

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for phone support centers are linked below.
What qualifies
Company records worldwide whose business descriptions match “phone support centers” 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. 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 20,058 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 November 6, 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.

Phone support centers by location

19 lists · largest first

Every Phone support centers 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 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 “phone support centers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many phone support centers are there worldwide?

RevenueBase identified 4,530 company matches for phone support centers worldwide as of November 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?

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

Which country has the most phone support centers?

The United States leads with 783 companies, followed by India (339) and Pakistan (330). Every phone support centers list by country and city is linked on this page.

Which city has the most phone support centers?

Lahore leads with 118 company records, followed by Rawalpindi (75) and London (45).

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 20,058 professional contacts with verified work emails tracked across these 4,530 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 November 6, 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.