Company lists · Data refreshed September 2026

Top 21 Call center build out contractors based in the United States

RevenueBase identified 53 company matches for call center build out contractors associated with the United States as of September 2026 and tracks 2,381 professional contacts across them, including 268 with verified work emails. Horsham is the largest hub.

This list covers company matches for call center build out contractors 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 27, 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 27, 2026 How this list was built
53Companies
2,381Contacts tracked
268Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 21 largest call center build out contractors based in the United States

Ranked by team size
Top 21 of 53 company matches for call center build out contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHorsham, PA, United StatesHQ recorded Sep 27, 2026501-1,000883 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 27, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Sep 27, 2026501-1,000561 contacts →

Exact match

“We build fully managed call centers: Software build outs Hiring Training Integrations”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchGreensboro, NC, United StatesHQ recorded Sep 27, 2026201-500216 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 27, 2026 · View company records in RevenueBase
4Exact matchKalamazoo, MI, United StatesHQ recorded Sep 27, 202651-20044 contacts →

Exact match

“Call Center Experts.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchSan Francisco, CA, United StatesHQ recorded Sep 27, 2026501-1,00027 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchHorsham, PA, United StatesHQ recorded Sep 27, 202651-20027 contacts →

Exact match

“Quality Contact Solutions provides quality call center solutions that achieve sales results.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchBuena Park, CA, United StatesHQ recorded Sep 27, 202611-5023 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchSandy, UT, United StatesHQ recorded Sep 27, 202651-20020 contacts →

Exact match

“Yessio LLC: We operate a contact center in Salt Lake City, UT that provides first party business solutions for companies across the USA.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchDes Moines, IA, United StatesHQ recorded Sep 27, 2026501-1,00015 contacts →

Exact match

“Headquartered in Des Moines, Iowa PBS specializes in creating contact center solutions that cover every aspect of one on one communication – uniquely applied to each client…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchChantilly, VA, United StatesHQ recorded Sep 27, 202611-5010 contacts →

Exact match

“Entinu Communication is a leading telecommunications infrastructure company enabling the transmission of next generation technologies and media.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchNewark, DE, United StatesHQ recorded Sep 27, 202611-5010 contacts →

Exact match

“Call Center Outsourcing”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchOrtonville, MI, United StatesHQ recorded Sep 27, 202611-509 contacts →

Exact match

“MDTS is a certified WBENC/WOSB contractor in the telecommunications field who specializes in the installation and maintenance of cellular communication technology.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchPompano Beach, FL, United StatesHQ recorded Sep 27, 202611-508 contacts →

Exact match

“Turnkey Contact Center Rental Managed Contact Center Solutions Contact Center Buildout BPO Store”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchCincinnati, OH, United StatesHQ recorded Sep 27, 20261-106 contacts →

Exact match

“Advanced Facilities, Inc.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchParkville, MD, United StatesHQ recorded Sep 27, 202611-506 contacts →

Exact match

“A decade of experience in telecommunication/low-voltage work.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchGrand Rapids, MI, United StatesHQ recorded Sep 27, 202611-505 contacts →

Exact match

“Let Shareco keep you connected.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchGarden Grove, CA, United StatesHQ recorded Sep 27, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchAustin, TX, United StatesHQ recorded Sep 27, 20261-103 contacts →

Exact match

“Who we serve.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchPlainfield, IL, United StatesHQ recorded Sep 27, 2026501-1,0003 contacts →

Exact match

“CAVO is a full-service telecom contractor headquartered in Plainfield, Illinois.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchRichmond, VA, United StatesHQ recorded Sep 27, 202651-2002 contacts →

Exact match

“FocalPoint CX Leadership has over 100 years of Customer Service, Sales, and Call Center experience.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchHudson, United StatesHQ recorded Sep 27, 20261-101 contacts →

Exact match

“Design, build, data centers and specialty control rooms primarily in the Ohio market.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 21 of 53 call center build out contractors based in the United States

See the full list, filter by size, metro and specialty, and access 268 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Call center build out contractors based in the United States at a glance

As of Sep 27, 2026
11.3%Verified-email coverage
44.9Average contacts per company
11-50Median size (employees)
3.8%Largest-city concentration · Horsham
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
19
11-50
18
51-200
6
201-500
2
501-1,000
7
1,001-5,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 53 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 the United States whose business descriptions match “call center build out contractors” 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 268 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 27, 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.

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 “call center build out contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many call center build out contractors are there based in the United States?

RevenueBase identified 53 company matches for call center build out contractors 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?

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

Which city has the most call center build out contractors?

Horsham leads with 2 company records, followed by Houston (2) and San Francisco (2).

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 268 professional contacts with verified work emails tracked across these 53 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 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 53 call center build out contractors based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.