Company lists · Data refreshed September 2026

Top 25 Live call answering services companies worldwide

Name: Live call answering services companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 2,300 companies tracked

RevenueBase identified 2,300 live call answering services companies worldwide as of September 2026 and tracks 33,146 professional contacts across them, including 3,425 with verified work emails. The United States is the largest market and London the largest hub.

This list covers live call answering services companies 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 20, 2026. Country and city lists for live call answering services companies 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

2,300Companies

33,146Contacts tracked

3,425Verified emails

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The 25 largest live call answering services companies worldwide

Ranked by team size

Top 25 of 2,300 live call answering services companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to live call answering services companies: 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	Advanced Call Center Technologies, LLC	Partial evidence	Berwyn, PA, United StatesHQ checked Sep 20, 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 20, 2026
2	The Office Gurus	Partial evidence	St Petersburg, FL, RussiaHQ checked Sep 20, 2026	1,001-5,000	1,198 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
3	Answernet	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 20, 2026	501-1,000	883 contacts →
	Indirect evidence “If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Source: RevenueBase Database · checked Sep 20, 2026
4	Global Contact Services GCS	Indirect evidence	Salisbury, NC, United StatesHQ checked Sep 20, 2026	501-1,000	542 contacts →
	Indirect evidence “We are customer service experts.” Source: RevenueBase Database · checked Sep 20, 2026
5	MAP Communications	Strong evidence	Chesapeake, VA, United StatesHQ checked Sep 20, 2026	501-1,000	478 contacts →
	Strong evidence “Since 1991 MAP Communications has been providing professional live telephone answering services 24/7/365.” Source: RevenueBase Database · checked Sep 20, 2026
6	Supportzebra	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	454 contacts →
	Indirect evidence “SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention \|…” Source: RevenueBase Database · checked Sep 20, 2026
7	RUBY	Partial evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	501-1,000	453 contacts →
	Partial evidence “Ruby supports more than businesses with live virtual receptionists and 24/7 chat services.” Source: RevenueBase Database · checked Sep 20, 2026
8	Proper Business Solutions	Partial evidence	Cairo, EgyptHQ checked Sep 20, 2026	1,001-5,000	447 contacts →
	Partial evidence “Proper Business solutions is offering a comprehensive suite of customer care call center services, outbound and lead generation, back-office and data processing solutions to…” Source: RevenueBase Database · checked Sep 20, 2026
9	Ansafone Contact Centers	Indirect evidence	Santa Ana, CA, United StatesHQ checked Sep 20, 2026	501-1,000	431 contacts →
	Indirect evidence “About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.” Source: RevenueBase Database · checked Sep 20, 2026
10	The Connection Contact Center	Indirect evidence	Bloomington, MN, United StatesHQ checked Sep 20, 2026	1,001-5,000	354 contacts →
	Indirect evidence “For over 35 years, The Connection has made a name for ourselves becoming one of the top industry partners to Fortune 500 companies looking to outsource their contact center…” Source: RevenueBase Database · checked Sep 20, 2026
11	Onbrand24	Partial evidence	Iowa City, United StatesHQ checked Sep 20, 2026	1,001-5,000	346 contacts →
	Partial evidence “As a distinguished global leader in call center outsourcing, OnBrand24 takes pride in its 30-year legacy of delivering exceptional inbound and outbound call center services across…” Source: RevenueBase Database · checked Sep 20, 2026
12	Phoneact	Partial evidence	Tunis, TunisiaHQ checked Sep 20, 2026	501-1,000	338 contacts →
	Partial evidence “With more than 900 employees, PhoneAct is an ISO 9001/2008 certified offshore call center service provider.” Source: RevenueBase Database · checked Sep 20, 2026
13	Sophi Outsourcing	Indirect evidence	Dumaguete, PhilippinesHQ checked Sep 20, 2026	201-500	310 contacts →
	Indirect evidence “Founded in 2008, SOPHI is an outsourcing center based in the Philippines.” Source: RevenueBase Database · checked Sep 20, 2026
14	Teledirect Call Centers	Strong evidence	Sacramento, CA, United StatesHQ checked Sep 20, 2026	201-500	307 contacts →
	Strong evidence “TeleDirect provides 24/7 U.S-based call center and answering services for organizations that cannot afford to miss important calls.” Source: RevenueBase Database · checked Sep 20, 2026
15	smith.ai	Strong evidence	Los Altos, CA, United StatesHQ checked Sep 20, 2026	51-200	293 contacts →
	Strong evidence “Founded by a team from Google, Apple, and Intuit, Smith.ai is known for superior call answering services.” Source: RevenueBase Database · checked Sep 20, 2026
16	Calltend INC	Indirect evidence	Los Angeles, TX, United StatesHQ checked Sep 20, 2026	51-200	289 contacts →
	Indirect evidence “Current Vertical Focus: Real Estate - Lead Generation, Lead Conversion, Lead Qualification, Agent Recruiting Mortgage - Lead Conversion, Lead Qualification Insurance - Lead…” Source: RevenueBase Database · checked Sep 20, 2026
17	Voxdata	Partial evidence	Montréal, QC, CanadaHQ checked Sep 20, 2026	201-500	246 contacts →
	Partial evidence “Since 1995, VOXDATA has been supplying outsourced call centre services, 24 hours a day, seven days a week, to meet all frontline customer relations needs.” Source: RevenueBase Database · checked Sep 20, 2026
18	PAC BIZ Outsourcing	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 20, 2026	51-200	182 contacts →
	Indirect evidence “We help companies deliver exceptional customer experiences.” Source: RevenueBase Database · checked Sep 20, 2026
19	Signia	Indirect evidence	Westminster, CO, United StatesHQ checked Sep 20, 2026	201-500	181 contacts →
	Indirect evidence “Signia aims to provide marketing services to targeted business environments in the US.” Source: RevenueBase Database · checked Sep 20, 2026
20	Gold Mountain Communications	Strong evidence	Springfield, MO, United StatesHQ checked Sep 20, 2026	201-500	180 contacts →
	Strong evidence “Gold Mountain Communications is a US-based live operator inbound/outbound call center and service agency helping leading national corporations outsource their customer service and…” Source: RevenueBase Database · checked Sep 20, 2026
21	Mytasker	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	51-200	166 contacts →
	Indirect evidence “When young minds unleash their voracious ambitions, dreams and aspirations the outcome is always awe-inspiring.” Source: RevenueBase Database · checked Sep 20, 2026
22	Serverplus	Indirect evidence	Orem, UT, United StatesHQ checked Sep 20, 2026	51-200	161 contacts →
	Indirect evidence “Whether you need outsourced support for your ISP or for your business, after hours support, BPO services or just a virtual assistant to help you answer phones and get through the…” Source: RevenueBase Database · checked Sep 20, 2026
23	Ventask	Partial evidence	Lisbon, PortugalHQ checked Sep 20, 2026	201-500	157 contacts →
	Partial evidence “É nossa missão proporcionar aos nossos parceiros um serviço de call center “top quality” que pode funcionar 24 horas por dia.” Source: RevenueBase Database · checked Sep 20, 2026
24	Call Experts	Partial evidence	Charleston, SC, United StatesHQ checked Sep 20, 2026	51-200	154 contacts →
	Partial evidence “Founded in 1982, Call Experts is a family owned and operated call center focused on providing extensive telecommunications and office-based services to professionals in numerous…” Source: RevenueBase Database · checked Sep 20, 2026
25	BPO Innovations	Indirect evidence	Guatemala City, GuatemalaHQ checked Sep 20, 2026	n/a	152 contacts →
	Indirect evidence “BPO Innovations offers worldwide small businesses a reliable partner for customer service, contact centers and business process solutions.” Source: RevenueBase Database · checked Sep 20, 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: live call answering services companies. 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 live call answering services companies.
Partial evidence: Its own public description names part of live call answering services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name live call answering services companies. 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 2,300 live call answering services companies worldwide

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Live call answering services companies worldwide at a glance

As of Sep 20, 2026

10.3%Verified-email coverage

14.4Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

779

11-50

838

51-200

476

201-500

129

501-1,000

1,001-5,000

5,001-10,000

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 live call answering services companies, 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 live call answering services companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “live call answering services companies”. 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 live call answering services companies), 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 live call answering services companies, 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, 3,425 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 20, 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.

Live call answering services companies by location

9 lists · largest first

Every Live call answering services companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 live call answering services companies, 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 live call answering services companies are there worldwide?

RevenueBase identified 2,300 live call answering services companies 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?

Advanced Call Center Technologies, LLC, headquartered in Berwyn, tops this list with the largest team on record.

Which country has the most live call answering services companies?

The United States leads with 715 companies, followed by the United Kingdom (147) and France (110). Every live call answering services companies list by country and city is linked on this page.

Which city has the most live call answering services companies?

London leads with 29 headquartered companies, followed by Lahore (28) and Rawalpindi (24).

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 3,425 verified decision-maker contacts tracked across these 2,300 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 20, 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.