Company lists · Data verified August 2026

Top 25 Cold calling agencies based in the United States

Name: Cold calling agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,088 companies tracked

There are 1,088 cold calling agencies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 22,273 professional contacts across them, including 2,061 with verified work emails and 4,265 with mobile numbers. Los Angeles is the largest hub.

This list covers cold calling agencies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,088Companies

22,273Contacts tracked

2,061Verified emails

4,265Mobile numbers

Unlock all 1,088 companies Free account · no credit card · 2 minutes

The 25 largest cold calling agencies based in the United States

Ranked by team size

Top 25 of 1,088 cold calling agencies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Advanced Call Center Technologies, LLC	Johnson City, TN	5,001-10,000	2,779	282
2	Answernet	Horsham, PA	501-1,000	892	148
3	Telenet Marketing Solutions	Athens, GA	201-500	554	40
4	Beyond Codes INC	Houston, TX	201-500	385	99
5	The Connection Contact Center	Burnsville, MN	1,001-5,000	353	6
6	By Appointment Only, Inc. BAO	Mesa, AZ	201-500	294	94
7	Boomsourcing	Lehi, UT	501-1,000	254	13
8	Rocket Connections	Detroit, MI	1,001-5,000	248	21
9	Belkins INC	Dover, DE	201-500	207	110
10	Signia	Greeley, CO	201-500	182	3
11	Gold Mountain Communications	Springfield, MO	201-500	178	1
12	Callsexperts	New York	501-1,000	170	1
13	Balboa Digital	Claremont, CA	201-500	137	18
14	Platinum Advertising	Trevose, PA	1,001-5,000	134	1
15	Triton Technologies, INC	Mansfield, MA	1,001-5,000	84	1
16	Quality Customer Service & Sales Qcss	Deer Park, IL	201-500	80	16
17	Yeetiq	Sarasota, FL	201-500	65	3
18	Exclusive Calls	Sheridan, WY	201-500	61	3
19	Getcallers	New York, NY	1,001-5,000	52	3
20	Elite Call	Algonquin, IL	201-500	47	9
21	Viasource Solutions	Thousand Oaks	201-500	45	3
22	Leadadvisors	Irvine, CA	201-500	38	6
23	Phone Ware INC	San Diego, CA	201-500	31	2
24	Aria Communications	St Cloud, MN	201-500	29	5
25	Netscout	Dallas, TX	1,001-5,000	16	3

Showing 25 of 1,088 cold calling agencies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,061 reachable decision-makers.

Free account · no credit card

See all 1,088 companies

Cold calling agencies based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

Los AngelesLargest hub · 37 HQs

4,265Contacts with mobile numbers

18Emails re-verified in last 30 days

Companies by employee count

1-10

368

11-50

385

51-200

231

201-500

501-1,000

1,001-5,000

5,001-10,000

Cold calling agencies by metro

Metro	Companies
Cold calling agencies in Los Angeles	37
Cold calling agencies in New York	37
Cold calling agencies in Sheridan	31
Cold calling agencies in Miami	30
Cold calling agencies in Houston	25
Cold calling agencies in San Francisco	18
Cold calling agencies in Chicago	17

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cold calling agencies”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 18 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cold calling agencies are there based in the United States?

There are 1,088 cold calling agencies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most cold calling agencies?

Los Angeles leads with 37 headquartered companies, followed by New York (37) and Sheridan (31).

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 2,061 verified decision-maker contacts tracked across these 1,088 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,088 cold calling agencies based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

Cold calling agencies by geography

Browse the directory

Browse: Companies home · All United States lists · All Cold calling agencies lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.