Company lists · Data refreshed September 2026

Top 25 Call center technology consultants based in the United States

Name: Call center technology consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 973 companies tracked

RevenueBase identified 973 call center technology consultants headquartered in the United States as of September 2026 and tracks 29,171 professional contacts across them, including 3,965 with verified work emails. Miami is the largest hub.

This list covers call center technology consultants 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 27, 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 27, 2026 86% judged on-target in blind review

973Companies

29,171Contacts tracked

3,965Verified emails

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The 25 largest call center technology consultants based in the United States

Ranked by team size

Top 25 of 973 call center technology consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to call center technology consultants: 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	Continuum Global Solutions	Partial evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	5,001-10,000	4,342 contacts →
	Partial evidence “With a fresh name and decades of contact center expertise, we’re dedicated to collaborative partnerships, understanding your unique needs, and tailoring solutions for an enhanced…” Source: RevenueBase Database · checked Sep 27, 2026
2	Telvista	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,122 contacts →
	Indirect evidence “Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Source: RevenueBase Database · checked Sep 27, 2026
3	RDI Corporation	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,484 contacts →
	Indirect evidence “At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.” Source: RevenueBase Database · checked Sep 27, 2026
4	Servion Global Solutions	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,250 contacts →
	Indirect evidence “Servion is a CX Consulting and global systems integrator (SI) headquartered in the United States, with over three decades in customer experience (CX) transformation.” Source: RevenueBase Database · checked Sep 27, 2026
5	Answernet	Partial evidence	Horsham, PA, United StatesHQ checked Sep 27, 2026	501-1,000	883 contacts →
	Partial 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 27, 2026
6	Global Contact Services GCS	Indirect evidence	Salisbury, NC, United StatesHQ checked Sep 27, 2026	501-1,000	542 contacts →
	Indirect evidence “We are customer service experts.” Source: RevenueBase Database · checked Sep 27, 2026
7	Contactus Communications	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 27, 2026	1,001-5,000	515 contacts →
	Indirect evidence “ContactUs Communications is a U.S.” Source: RevenueBase Database · checked Sep 27, 2026
8	American Customer Care	Indirect evidence	Bristol, CT, United StatesHQ checked Sep 27, 2026	1,001-5,000	513 contacts →
	Indirect evidence “American Customer Care specializes in providing individualized contact with your customers.” Source: RevenueBase Database · checked Sep 27, 2026
9	Alvaria CX	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	1,001-5,000	478 contacts →
	Partial evidence “Alvaria CX, the global leader in contact center solutions, emerged from the 2021 merger of Noble Systems and Aspect, bringing over 50 years of CX innovation.” Source: RevenueBase Database · checked Sep 27, 2026
10	Onesupport	Partial evidence	San Marcos, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	475 contacts →
	Partial evidence “OneSupport is a leading provider of customer experience, technical support, and sales enablement solutions for technology products and services.” Source: RevenueBase Database · checked Sep 27, 2026
11	Alliance Pdms	Partial evidence	Hurst, TX, United StatesHQ checked Sep 27, 2026	51-200	428 contacts →
	Partial evidence “Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.” Source: RevenueBase Database · checked Sep 27, 2026
12	Miller Heiman Group, A Korn Ferry Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	501-1,000	371 contacts →
	Indirect evidence “Miller Heiman Group is now part of Korn Ferry.” Source: RevenueBase Database · checked Sep 27, 2026
13	The Connection Contact Center	Partial evidence	Bloomington, MN, United StatesHQ checked Sep 27, 2026	1,001-5,000	354 contacts →
	Partial 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 27, 2026
14	Five Star Call Centers	Strong evidence	Sioux Falls, SD, United StatesHQ checked Sep 27, 2026	1,001-5,000	329 contacts →
	Strong evidence “Five Star Call Centers is a onshore and nearshore contact center outsourcer where we deliver outrageously amazing customer experiences for our clients and their customers.” Source: RevenueBase Database · checked Sep 27, 2026
15	Expertcallers	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 27, 2026	501-1,000	264 contacts →
	Indirect evidence “ExpertCallers (a division of Flatworld Solutions) is a global consulting and outsourcing company, with a wealth of experience in providing operational and strategic excellence to…” Source: RevenueBase Database · checked Sep 27, 2026
16	Rocket Connections	Partial evidence	Detroit, MI, United StatesHQ checked Sep 27, 2026	1,001-5,000	247 contacts →
	Partial evidence “Rocket Connections is a sales and support platform specializing in contact center services.” Source: RevenueBase Database · checked Sep 27, 2026
17	Customer Direct	Indirect evidence	Maryland Heights, MO, United StatesHQ checked Sep 27, 2026	201-500	234 contacts →
	Indirect evidence “Customer Direct, founded in 1997, empowers its clients to make better business decisions.” Source: RevenueBase Database · checked Sep 27, 2026
18	Anomaly Squared	Partial evidence	Greensboro, NC, United StatesHQ checked Sep 27, 2026	201-500	216 contacts →
	Partial evidence “Schedule your FREE Consultation here: http://bit.ly/2gUckQb Anomaly Squared is a contact center services provider.” Source: RevenueBase Database · checked Sep 27, 2026
19	American Support	Strong evidence	Jacksonville, FL, United StatesHQ checked Sep 27, 2026	501-1,000	192 contacts →
	Strong evidence “With nine call centers located in America, El Salvador, Nicaragua, the Dominican Republic and the Philippines, Bernard works with some of America's largest companies to provide…” Source: RevenueBase Database · checked Sep 27, 2026
20	Copc INC	Indirect evidence	Winter Park, FL, United StatesHQ checked Sep 27, 2026	51-200	182 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
21	Signia	Indirect evidence	Westminster, CO, United StatesHQ checked Sep 27, 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 27, 2026
22	Gold Mountain Communications	Strong evidence	Springfield, MO, United StatesHQ checked Sep 27, 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 27, 2026
23	Callsexperts	Strong evidence	New York, United StatesHQ checked Sep 27, 2026	501-1,000	173 contacts →
	Strong evidence “Calls Experts is a global contact center solution provider.” Source: RevenueBase Database · checked Sep 27, 2026
24	Zero Variance By Ubiquity	Strong evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	171 contacts →
	Strong evidence “Zero Variance by Ubiquity is a leader in Contact Center Solutions, specializing in BPOaaS, AI Technology, CX Services, Business Intelligence, Data Analytics, and QA Professional…” Source: RevenueBase Database · checked Sep 27, 2026
25	Avtex Solutions	Indirect evidence	Bloomington, MN, United StatesHQ checked Sep 27, 2026	201-500	159 contacts →
	Indirect evidence “Avtex, a leading provider of customer experience (CX) consulting and solutions, is now a part of TTEC Digital.” Source: RevenueBase Database · checked Sep 27, 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: call center technology consultants. 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 call center technology consultants.
Partial evidence: Its own public description names part of call center technology consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name call center technology consultants. 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 973 call center technology consultants based in the United States

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Call center technology consultants based in the United States at a glance

As of Sep 27, 2026

13.6%Verified-email coverage

30.0Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Miami

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

475

11-50

253

51-200

148

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 973 companies.

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 call center technology consultants, 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 “call center technology consultants”. 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 call center technology consultants), 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 call center technology consultants, 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, 3,965 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 27, 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.

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 call center technology consultants, 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 call center technology consultants are there based in the United States?

RevenueBase identified 973 call center technology consultants 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?

Continuum Global Solutions, headquartered in Dallas, tops this list with the largest team on record.

Which city has the most call center technology consultants?

Miami leads with 22 headquartered companies, followed by New York (22) and Chicago (21).

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 3,965 verified decision-maker contacts tracked across these 973 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 27, 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.