Company lists · Data refreshed September 2026

Top 25 Telemarketing companies based in the United States

Name: Telemarketing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 1,254 companies tracked

RevenueBase identified 1,254 telemarketing companies headquartered in the United States as of September 2026 and tracks 30,352 professional contacts across them, including 2,346 with verified work emails and 6,525 with mobile numbers. New York is the largest hub.

This list covers telemarketing companies headquartered in the United States, 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 6, 2026.

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 6, 2026 86% judged on-target in blind review

1,254Companies

30,352Contacts tracked

2,346Verified emails

6,525Mobile numbers

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The 25 largest telemarketing companies based in the United States

Ranked by team size

Top 25 of 1,254 telemarketing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to telemarketing 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	Indirect evidence	Berwyn, PA, United StatesHQ checked Sep 6, 2026	5,001-10,000	2,774 contacts →
	Indirect 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 6, 2026
2	Infocision Management Corporation	Indirect evidence	Akron, OH, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,764 contacts →
	Indirect evidence “InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Source: RevenueBase Database · checked Sep 6, 2026
3	Inktel Contact Center Solutions	Indirect evidence	Doral, FL, United StatesHQ checked Sep 6, 2026	1,001-5,000	902 contacts →
	Indirect evidence “Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Source: RevenueBase Database · checked Sep 6, 2026
4	Answernet	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 6, 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 6, 2026
5	CBE Companies	Indirect evidence	Cedar Falls, IA, United StatesHQ checked Sep 6, 2026	1,001-5,000	877 contacts →
	Indirect evidence “CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Source: RevenueBase Database · checked Sep 6, 2026
6	Movingdneedle Pvt. LTD	Indirect evidence	Sterling Heights, MI, United StatesHQ checked Sep 6, 2026	51-200	528 contacts →
	Indirect evidence “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Source: RevenueBase Database · checked Sep 6, 2026
7	Saleshive	Indirect evidence	Denver, CO, United StatesHQ checked Sep 6, 2026	51-200	455 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026
8	Alliance Pdms	Indirect evidence	Hurst, TX, United StatesHQ checked Sep 6, 2026	51-200	428 contacts →
	Indirect evidence “Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.” Source: RevenueBase Database · checked Sep 6, 2026
9	Touchstone Communications	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 6, 2026	501-1,000	393 contacts →
	Indirect evidence “Touchstone Communications was built in 2002 on the philosophy of hiring educated, motivated talent and then providing them with the best training and management to achieve our…” Source: RevenueBase Database · checked Sep 6, 2026
10	The Connection Contact Center	Indirect evidence	Bloomington, MN, United StatesHQ checked Sep 6, 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 6, 2026
11	Teledirect Call Centers	Indirect evidence	Sacramento, CA, United StatesHQ checked Sep 6, 2026	201-500	307 contacts →
	Indirect 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 6, 2026
12	Calltend INC	Indirect evidence	Los Angeles, TX, United StatesHQ checked Sep 6, 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 6, 2026
13	Boomsourcing	Indirect evidence	Lehi, UT, United StatesHQ checked Sep 6, 2026	501-1,000	256 contacts →
	Indirect evidence “Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Source: RevenueBase Database · checked Sep 6, 2026
14	Rocket Connections	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 6, 2026	1,001-5,000	247 contacts →
	Indirect evidence “Rocket Connections is a sales and support platform specializing in contact center services.” Source: RevenueBase Database · checked Sep 6, 2026
15	Anomaly Squared	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 6, 2026	201-500	216 contacts →
	Indirect evidence “Schedule your FREE Consultation here: http://bit.ly/2gUckQb Anomaly Squared is a contact center services provider.” Source: RevenueBase Database · checked Sep 6, 2026
16	Quantum 3 Media	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 6, 2026	51-200	204 contacts →
	Indirect evidence “Quantum 3 Media is one of the fastest growing organizations within the customer acquisition, lead generation/Pay per call within all verticals of insurance and education, contact…” Source: RevenueBase Database · checked Sep 6, 2026
17	Grupo NOA International	Indirect evidence	Miami, United StatesHQ checked Sep 6, 2026	51-200	190 contacts →
	Indirect evidence “Grupo Noa International is a premier virtual call center for the international direct response industry.” Source: RevenueBase Database · checked Sep 6, 2026
18	Signia	Indirect evidence	Westminster, CO, United StatesHQ checked Sep 6, 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 6, 2026
19	Gold Mountain Communications	Indirect evidence	Springfield, MO, United StatesHQ checked Sep 6, 2026	201-500	180 contacts →
	Indirect 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 6, 2026
20	Callsexperts	Indirect evidence	New York, United StatesHQ checked Sep 6, 2026	501-1,000	173 contacts →
	Indirect evidence “Calls Experts is a global contact center solution provider.” Source: RevenueBase Database · checked Sep 6, 2026
21	RUI	Indirect evidence	Melville, NY, United StatesHQ checked Sep 6, 2026	1,001-5,000	161 contacts →
	Indirect evidence “For over three decades, RUI has empowered teams just like yours by delivering strategy and technology through outsourced customer experience management and demand generation.” Source: RevenueBase Database · checked Sep 6, 2026
22	Call Experts	Indirect evidence	Charleston, SC, United StatesHQ checked Sep 6, 2026	51-200	154 contacts →
	Indirect 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 6, 2026
23	Balboa Digital	Indirect evidence	Claremont, CA, United StatesHQ checked Sep 6, 2026	201-500	137 contacts →
	Indirect evidence “Balboa Digital Provides Trusted, Compliant, Effective Call Center Services Get to know Balboa Digital - Our experience, expertise, and innovative call technology, set us apart.” Source: RevenueBase Database · checked Sep 6, 2026
24	Platinum Advertising	Indirect evidence	Trevose, PA, United StatesHQ checked Sep 6, 2026	1,001-5,000	135 contacts →
	Indirect evidence “Founded in Platinum Advertising is a direct marketing firm that specializes in customer service, customer retention and customer acquisition.” Source: RevenueBase Database · checked Sep 6, 2026
25	Boom Demand	Indirect evidence	Lehi, UT, United StatesHQ checked Sep 6, 2026	1,001-5,000	124 contacts →
	Indirect evidence “Boom Demand is an Lead Generation & Customer Acquisition powerhouse that will help you increase revenue and grow your customer base.” Source: RevenueBase Database · checked Sep 6, 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: telemarketing 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 telemarketing companies.
Partial evidence: Its own public description names part of telemarketing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telemarketing 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 1,254 telemarketing companies based in the United States

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Telemarketing companies based in the United States at a glance

As of Sep 6, 2026

7.7%Verified-email coverage

21.5%Mobile-number coverage

24.2Average contacts per company

11-50Median size (employees)

3.0%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

316

11-50

489

51-200

291

201-500

102

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

2,1220–30

18231–60

161–90

190–180

40180+

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 telemarketing 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “telemarketing 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 telemarketing 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 telemarketing companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 2,346 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 6, 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.

Telemarketing companies by metro

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 telemarketing 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 telemarketing companies are there based in the United States?

RevenueBase identified 1,254 telemarketing companies headquartered in the United States 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 city has the most telemarketing companies?

New York leads with 38 headquartered companies, followed by Houston (34) and Los Angeles (33).

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 2,346 verified decision-maker contacts tracked across these 1,254 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 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 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.