Company lists · Data refreshed October 2026

Top 25 Call center service providers based in India

RevenueBase identified 424 company matches for call center service providers associated with India as of October 2026 and tracks 16,286 professional contacts across them, including 307 with verified work emails. Bangalore is the largest hub.

This list covers company matches for call center service providers associated with India, 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 October 1, 2026.

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 Oct 1, 2026 How this list was built
424Companies
16,286Contacts tracked
307Verified emails
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The 25 largest call center service providers based in India

Ranked by team size
Top 25 of 424 company matches for call center service providers based in India, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 matchKolkata, IndiaHQ recorded Oct 1, 20261,001-5,0003,346 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchBhopal, IndiaHQ recorded Oct 1, 20261,001-5,0001,762 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 · Oct 1, 2026 · View company records in RevenueBase
3Exact matchHyderabad, IndiaHQ recorded Oct 1, 20261,001-5,0001,076 contacts →

Exact match

“Even the markets know that we’re the good call’!”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchNoida, IndiaHQ recorded Oct 1, 20261,001-5,000863 contacts →

Exact match

“inTarvo stands for our core ideology of Delivering Value (inT+arvo=Integration + Value).”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchGurgaon, IndiaHQ recorded Oct 1, 20261,001-5,000488 contacts →

Exact match

“Welcome to the India page of Transcom!”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchNoida, IndiaHQ recorded Oct 1, 20265,001-10,000467 contacts →

Exact match

“DigiTech is one of the fastest growing Outsourcing & Offsourcing company in Delhi/NCR.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchBangalore, IndiaHQ recorded Oct 1, 20261,001-5,000455 contacts →

Exact match

“ExpertCallers, a Flatworld Solutions company, is a well-established and reputed modern day call center outsourcing company.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchBangalore, IndiaHQ recorded Oct 1, 20261,001-5,000340 contacts →

Exact match

“We specialize in end-to-end outsourcing across all industries and functions, including: Customer Support & Call Center Inbound/outbound call handling, technical support, live…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchNew Delhi, IndiaHQ recorded Oct 1, 2026201-500284 contacts →

Exact match

“Navigant Technologies is an ISO 9001-2008 certified international call center headquartered in Delhi, India.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchNoida, IndiaHQ recorded Oct 1, 2026501-1,000184 contacts →

Exact match

“Radiate E Services Pvt.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchMumbai, IndiaHQ recorded Oct 1, 2026201-500163 contacts →

Exact match

“Excel Infoways Ltd is a Leading Customer Contact Centre providing Voice Based Services in the areas of Collections, Telemarketing and Customer Care.It offers a range of customer…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchPune, IndiaHQ recorded Oct 1, 2026201-500158 contacts →

Exact match

“Nextgen CX services, explore fast, reliable, efficient on-demand services.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchChennai, IndiaHQ recorded Oct 1, 20261,001-5,000141 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchThane, IndiaHQ recorded Oct 1, 202651-200140 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchNew Delhi, IndiaHQ recorded Oct 1, 2026201-500129 contacts →

Exact match

“Ebullient Services provides clients with successful business process outsourcing (BPO) solutions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchPatna, IndiaHQ recorded Oct 1, 202611-50110 contacts →

Exact match

“NORTHERN IT SERVICES PRIVATE LIMITED is a company based out of BESIDES 9 TO 9 SUPER MARKET, RAMNAGARI MORE SHIANA DIGHA ROAD, PATNA, Bihar, India.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchDelhi, IndiaHQ recorded Oct 1, 202651-20097 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchGurgaon, IndiaHQ recorded Oct 1, 202651-20071 contacts →

Exact match

“Gandalf Services is a full-service customer engagement centre that provides Inbound, Outbound, Back Office and Consulting Services for outsourced environments.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchNoida, IndiaHQ recorded Oct 1, 2026201-50064 contacts →

Exact match

“One Touch Solutions was founded in Melbourne, Australia and specializes all forms of call centre outsourcing services.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchBangalore, IndiaHQ recorded Oct 1, 2026201-50063 contacts →

Exact match

“Mainstay offshore is an award winning offshore services provider providing Technical services in the areas of network, Dialup, browser, email, OS, hardware, software and web…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchNashik, IndiaHQ recorded Oct 1, 202651-20059 contacts →

Exact match

“Omiz Solutions is one stop solutions for Customer Service, Inbound Sales, Digital Marketing, Chat Support, Technical Support, CRM, Call Center, Google PPC, and Lead Generation We…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchIndore, IndiaHQ recorded Oct 1, 202651-20057 contacts →

Exact match

“Xtrim Global Solutions is an end-to-end business solutions provider, that specializes in helping clients generate higher revenue, increase customer retention and to understand…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchNew Delhi, IndiaHQ recorded Oct 1, 202651-20056 contacts →

Exact match

“At Call Connect India, we are a leading Call Center and Business Process Outsourcing (BPO) service provider, dedicated to helping businesses worldwide achieve their targets and…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchDelhi, IndiaHQ recorded Oct 1, 202611-5053 contacts →

Exact match

“A Leading Customer Service Outsourcing Company Offering the Most Reliable and Cost-Effective Business Process Outsourcing Solutions Major Services include- Call Answering and…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchBangalore, IndiaHQ recorded Oct 1, 2026201-50053 contacts →

Exact match

“G7TS is a confluence of talent and expertise in the field of Customer Service, Client management and Operational delivery.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 424 call center service providers based in India

See the full list, filter by size, metro and specialty, and access 307 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Call center service providers based in India at a glance

As of Oct 1, 2026
1.9%Verified-email coverage
38.4Average contacts per company
11-50Median size (employees)
9.2%Largest-city concentration · Bangalore
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
68
11-50
155
51-200
112
201-500
45
501-1,000
20
1,001-5,000
22
5,001-10,000
1

Email recency for this list is measured worldwide rather than for India, so it is reported there. Company counts and contact totals on this page are exact for India, over 424 companies.

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.
What qualifies
Company records associated with India whose business descriptions match “call center service providers” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 307 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 October 1, 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.

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 “call center service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many call center service providers are there based in India?

RevenueBase identified 424 company matches for call center service providers associated with India as of October 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?

Teleperformance Global Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most call center service providers?

Bangalore leads with 39 company records, followed by Noida (39) and Kolkata (30).

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 307 professional contacts with verified work emails tracked across these 424 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 October 1, 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.