Company lists · Data refreshed November 2026

Top 25 Customer service outsourcing agencies based in India

Name: Customer service outsourcing agencies based in India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 1,671 companies tracked

RevenueBase identified 1,671 company matches for customer service outsourcing agencies associated with India as of November 2026 and tracks 101,475 professional contacts across them, including 3,980 with verified work emails. Bangalore is the largest hub.

This list covers company matches for customer service outsourcing agencies 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 November 5, 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 Nov 5, 2026 How this list was built

1,671Companies

101,475Contacts tracked

3,980Verified emails

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The 25 largest customer service outsourcing agencies based in India

Ranked by team size

Top 25 of 1,671 company matches for customer service outsourcing agencies based in India, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Ienergizer	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	10001+	15,893 contacts →
	Exact match “iEnergizer is a leading Business Process Outsourcing provider (“BPO”) of customer management solutions dedicated to delivering performance while actively supporting and advocating…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Cogent E Services	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	10001+	7,713 contacts →
	Exact match “We are an end-to-end Customer Experience (CX) solutions provider offering omni-channel solutions along various customer interaction touch-points from customer sales and support…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Startek India	Exact match	Mumbai, IndiaHQ recorded Nov 5, 2026	10001+	4,772 contacts →
	Exact match “Startek is a leading global provider of technology-enabled business process outsourcing solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Teleperformance Global Services	Exact match	Kolkata, IndiaHQ recorded Nov 5, 2026	1,001-5,000	4,105 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	1point1	Exact match	Navi Mumbai, IndiaHQ recorded Nov 5, 2026	5,001-10,000	2,486 contacts →
	Exact match “At 1Point1, we empower brands to explore new frontiers, hassle-free.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	NSB BPO Solutions Limited	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	1,001-5,000	1,988 contacts →
	Exact match “NSBBPO is a leading Business Process Outsourcing (BPO/BPM) services organization specializing in the area of CX & business support solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Technotask Business Solutions PVT LTD	Exact match	Bhopal, IndiaHQ recorded Nov 5, 2026	1,001-5,000	1,917 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 5, 2026 · View company records in RevenueBase
8	Hrhnext Services Limited	Exact match	Hyderabad, IndiaHQ recorded Nov 5, 2026	1,001-5,000	1,132 contacts →
	Exact match “Even the markets know that we’re the good call’!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Iccs -Business Process Management Company	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	1,001-5,000	1,008 contacts →
	Exact match “ICCS, a Business Process Outsourcing company, proposes to assist your setup by not only executing the typical outsourced BPO services, but by committing to provide the essential…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Imarque Solutions Pvt. LTD	Exact match	Chennai, IndiaHQ recorded Nov 5, 2026	1,001-5,000	959 contacts →
	Exact match “Started operation on 2004 with 25 employees, Currently iMarque has grown into a powerhouse of over professionals today, consistently achieving an impressive 40% average annual…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Intarvo Technologies Pvt. Limited	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	1,001-5,000	896 contacts →
	Exact match “inTarvo stands for our core ideology of Delivering Value (inT+arvo=Integration + Value).” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Ileads Auxiliary Services PVT LTD	Exact match	Dehra Dun, IndiaHQ recorded Nov 5, 2026	1,001-5,000	854 contacts →
	Exact match “ILeads is one of the fastest growing and leading BPO/KPO/ITES industry based companies in the Dehradun region.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Competent Synergies	Exact match	Chandigarh, IndiaHQ recorded Nov 5, 2026	5,001-10,000	820 contacts →
	Exact match “Acquired by Fusion BPO in 2021” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Altius Customer Services PVT LTD	Exact match	Mumbai, IndiaHQ recorded Nov 5, 2026	501-1,000	744 contacts →
	Exact match “Altius is a leading provider of Information Technology and BPO (Business Process Outsourcing) Services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Girnar Care	Exact match	Jaipur, IndiaHQ recorded Nov 5, 2026	501-1,000	681 contacts →
	Exact match “We at Girnar Care work towards customer satisfaction and it is also a center of customer excellence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Konexions Backoffice Services PVT LTD	Exact match	Delhi, IndiaHQ recorded Nov 5, 2026	1,001-5,000	654 contacts →
	Exact match “Konexions Backoffice Services Pvt Ltd is a premium outsourcing company with its registered office at I-16, Lajpat Nagar-2, New Delhi-110024.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Transcom India	Exact match	Gurgaon, IndiaHQ recorded Nov 5, 2026	1,001-5,000	650 contacts →
	Exact match “Welcome to the India page of Transcom!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Taurus BPO Services India LLP	Exact match	Pune, IndiaHQ recorded Nov 5, 2026	1,001-5,000	603 contacts →
	Exact match “Our services are credible and scalable Our Key Services Include-Customer service management -Data & business analytics -Sales & marketing -Supply chain services -Accounts payable…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Life At Ecpl	Exact match	Bangalore, IndiaHQ recorded Nov 5, 2026	1,001-5,000	464 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 · Nov 5, 2026 · View company records in RevenueBase
20	Mervice Infotech Pvt. LTD	Exact match	Kolkata, IndiaHQ recorded Nov 5, 2026	1,001-5,000	446 contacts →
	Exact match “As a company with the potential to establish a strong foothold within the BPO domain Mervice promises to go beyond ensuring quality inbound and outbound services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Corporate Infocom Pvt. LTD	Exact match	Delhi, IndiaHQ recorded Nov 5, 2026	n/a	404 contacts →
	Exact match “Who We Are?” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Transact Global	Exact match	Bangalore, IndiaHQ recorded Nov 5, 2026	1,001-5,000	354 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 · Nov 5, 2026 · View company records in RevenueBase
23	Tata Business Services & Support Limited	Exact match	Hyderabad, IndiaHQ recorded Nov 5, 2026	1,001-5,000	353 contacts →
	Exact match “Tata Business Services & Support Limited is a consumer services company based out of 1-8-371 Gowra Trinity Sp Road, Hyderabad, Andhra Pradesh, India.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Deccan Iservices Pvt. LTD	Exact match	Villupuram, IndiaHQ recorded Nov 5, 2026	501-1,000	338 contacts →
	Exact match “Deccan iServices Pvt.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	ATS Services PVT LTD	Exact match	Faridabad, IndiaHQ recorded Nov 5, 2026	201-500	331 contacts →
	Exact match “We are a diversified services company with extensive experience in design and execution of customer engagement programs meeting diverse requirements of our clients.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “customer service outsourcing agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,671 customer service outsourcing agencies based in India

See the full list, filter by size, metro and specialty, and access 3,980 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Customer service outsourcing agencies based in India at a glance

As of Nov 5, 2026

3.9%Verified-email coverage

60.7Average contacts per company

11-50Median size (employees)

8.4%Largest-city concentration · Bangalore

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

321

11-50

636

51-200

405

201-500

154

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,671 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 “customer service outsourcing agencies” 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 3,980 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 5, 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.

Customer service outsourcing agencies by metro

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 “customer service outsourcing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer service outsourcing agencies are there based in India?

RevenueBase identified 1,671 company matches for customer service outsourcing agencies associated with India 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?

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

Which city has the most customer service outsourcing agencies?

Bangalore leads with 140 company records, followed by Noida (128) and Pune (92).

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 3,980 professional contacts with verified work emails tracked across these 1,671 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 5, 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.