Company lists · Data refreshed September 2026

Top 25 Lead generation call centers based in the United States

Name: Lead generation call centers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 2,551 companies tracked

RevenueBase identified 2,551 company matches for lead generation call centers associated with the United States as of September 2026 and tracks 37,967 professional contacts across them, including 4,042 with verified work emails and 6,820 with mobile numbers. New York is the largest hub.

This list covers company matches for lead generation call centers associated with the United States, 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 September 4, 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 Sep 4, 2026 How this list was built

2,551Companies

37,967Contacts tracked

4,042Verified emails

6,820Mobile numbers

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The 25 largest lead generation call centers based in the United States

Ranked by team size

Top 25 of 2,551 company matches for lead generation call centers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 4, 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	Advanced Call Center Technologies, LLC	Exact match	Berwyn, TN, United StatesHQ recorded Sep 4, 2026	5,001-10,000	2,779 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 · Sep 4, 2026 · View company records in RevenueBase
2	Cience	Exact match	Miami, FL, United StatesHQ recorded Sep 4, 2026	201-500	1,071 contacts →
	Exact match “CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
3	Inktel Contact Center Solutions	Exact match	Doral, FL, United StatesHQ recorded Sep 4, 2026	1,001-5,000	905 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
4	Answernet	Exact match	Horsham, PA, United StatesHQ recorded Sep 4, 2026	501-1,000	892 contacts →
	Exact match “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!” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
5	S2w Media	Exact match	New York, CA, United StatesHQ recorded Sep 4, 2026	501-1,000	798 contacts →
	Exact match “We are innovators, problem solvers, thought leaders, and above all else, a team.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
6	Salebuild	Exact match	Redwood City, CA, United StatesHQ recorded Sep 4, 2026	n/a	708 contacts →
	Exact match “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
7	Telenet Marketing Solutions	Exact match	Athens, GA, United StatesHQ recorded Sep 4, 2026	201-500	554 contacts →
	Exact match “From initial market awareness to the final stages of a complex B2B buying journey, modern buyers crave authentic interaction.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
8	Callbox INC	Exact match	Encino, CA, United StatesHQ recorded Sep 4, 2026	201-500	501 contacts →
	Exact match “Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
9	Saleshive	Exact match	Denver, CO, United StatesHQ recorded Sep 4, 2026	51-200	455 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
10	Alliance Pdms	Exact match	Hurst, TX, United StatesHQ recorded Sep 4, 2026	51-200	428 contacts →
	Exact match “Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
11	Beyond Codes INC	Exact match	Simi Valley, TX, United StatesHQ recorded Sep 4, 2026	201-500	385 contacts →
	Exact match “Founded in 2008, Beyond Codes Inc.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
12	The Connection Contact Center	Exact match	Bloomington, MN, United StatesHQ recorded Sep 4, 2026	1,001-5,000	353 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
13	Teledirect Call Centers	Exact match	Sacramento, CA, United StatesHQ recorded Sep 4, 2026	201-500	309 contacts →
	Exact match “TeleDirect provides 24/7 U.S-based call center and answering services for organizations that cannot afford to miss important calls.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
14	By Appointment Only, Inc. BAO	Exact match	Chelmsford, AZ, United StatesHQ recorded Sep 4, 2026	201-500	294 contacts →
	Exact match “The market knows us as the leader in appointment setting.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
15	Calltend INC	Exact match	Los Angeles, United StatesHQ recorded Sep 4, 2026	51-200	288 contacts →
	Exact match “Current Vertical Focus: Real Estate - Lead Generation, Lead Conversion, Lead Qualification, Agent Recruiting Mortgage - Lead Conversion, Lead Qualification Insurance - Lead…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
16	Boomsourcing	Exact match	Lehi, UT, United StatesHQ recorded Sep 4, 2026	501-1,000	254 contacts →
	Exact match “Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
17	Rocket Connections	Exact match	Detroit, MI, United StatesHQ recorded Sep 4, 2026	1,001-5,000	248 contacts →
	Exact match “Rocket Connections is a sales and support platform specializing in contact center services.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
18	Marketjoy, INC	Exact match	Pensacola, FL, United StatesHQ recorded Sep 4, 2026	51-200	225 contacts →
	Exact match “Founded in 2016 and headquartered in Pensacola, Florida, MarketJoy is a B2B lead generation, appointment generation and sales development partner built to deliver predictable…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
19	Squeeze	Exact match	Orem, UT, United StatesHQ recorded Sep 4, 2026	501-1,000	217 contacts →
	Exact match “Squeeze (GoSqueeze.com) is the leader in Sales Experience (SX).” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
20	Anomaly Squared	Exact match	Greensboro, NC, United StatesHQ recorded Sep 4, 2026	201-500	216 contacts →
	Exact match “Schedule your FREE Consultation here: http://bit.ly/2gUckQb Anomaly Squared is a contact center services provider.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
21	Belkins INC	Exact match	Dover, DE, United StatesHQ recorded Sep 4, 2026	201-500	207 contacts →
	Exact match “Belkins is the #1 ranked appointment-setting agency in the USA for 5 years in a row, driving results for businesses in 50+ industries across the globe.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
22	Quantum 3 Media	Exact match	Charlotte, NC, United StatesHQ recorded Sep 4, 2026	51-200	203 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
23	Dynamic BDC	Exact match	Troy, MI, United StatesHQ recorded Sep 4, 2026	501-1,000	190 contacts →
	Exact match “Dynamic Marketing Services was created to cost effectively address the needs of Dealers who want to professionally handle their internet leads as well as their outbound sales and…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
24	Concept Services	Exact match	Copley, OH, United StatesHQ recorded Sep 4, 2026	51-200	186 contacts →
	Exact match “Concept develops and implements comprehensive B2B lead generation and sales development solutions for companies.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
25	Grupo NOA International	Exact match	Miami, United StatesHQ recorded Sep 4, 2026	51-200	186 contacts →
	Exact match “Grupo Noa International is a premier virtual call center for the international direct response industry.” Recorded in the RevenueBase company graph · Sep 4, 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 “lead generation call centers”. 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 2,551 lead generation call centers based in the United States

See the full list, filter by size, metro and specialty, and access 4,042 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Lead generation call centers based in the United States at a glance

As of Sep 4, 2026

10.6%Verified-email coverage

18.0%Mobile-number coverage

14.9Average contacts per company

11-50Median size (employees)

5.1%Largest-city concentration · New York

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

1,191

11-50

866

51-200

342

201-500

106

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

37331–60

1,95161–90

1,64190–180

77180+

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 the United States whose business descriptions match “lead generation call 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. 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 4,042 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 September 4, 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.

Lead generation call centers 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 “lead generation call centers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many lead generation call centers are there based in the United States?

RevenueBase identified 2,551 company matches for lead generation call centers associated with the United States as of September 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?

Advanced Call Center Technologies, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most lead generation call centers?

New York leads with 129 company records, followed by Sheridan (81) and Los Angeles (78).

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 4,042 professional contacts with verified work emails tracked across these 2,551 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 September 4, 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.