Company lists · Data refreshed September 2026

Top 25 Voice enabled contact centers based in the United States

Name: Voice enabled contact 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 14, 2026 430 companies tracked

RevenueBase identified 430 voice enabled contact centers headquartered in the United States as of September 2026 and tracks 31,474 professional contacts across them, including 7,078 with verified work emails. San Francisco is the largest hub.

This list covers voice enabled contact centers 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 14, 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 14, 2026 86% judged on-target in blind review

430Companies

31,474Contacts tracked

7,078Verified emails

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The 25 largest voice enabled contact centers based in the United States

Ranked by team size

Top 25 of 430 voice enabled contact centers based in the United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to voice enabled contact centers: 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	24 7.ai	Partial evidence	Campbell, CA, United StatesHQ checked Sep 14, 2026	10001+	8,461 contacts →
	Partial evidence “24]7.ai™ customer engagement solutions use conversational artificial intelligence to understand customer intent, enabling companies to create personalized, predictive, and…” Source: RevenueBase Database · checked Sep 14, 2026
2	Verint	Strong evidence	Melville, NY, United StatesHQ checked Sep 14, 2026	5,001-10,000	3,852 contacts →
	Strong evidence “Verint helps you deliver AI outcomes now to solve your most pressing CX automation challenges in the contact center and beyond.” Source: RevenueBase Database · checked Sep 14, 2026
3	Etech Global Services	Indirect evidence	Nacogdoches, TX, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,964 contacts →
	Indirect evidence “Etech Global Services delivers customer experience solutions and proprietary AI technology to Fortune 500 companies across telecommunications, healthcare, financial services, and…” Source: RevenueBase Database · checked Sep 14, 2026
4	Advanced Call Center Technologies, LLC	Partial evidence	Berwyn, PA, United StatesHQ checked Sep 14, 2026	5,001-10,000	2,774 contacts →
	Partial 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 14, 2026
5	Soundhound AI	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 14, 2026	501-1,000	669 contacts →
	Partial evidence “SoundHound AI (Nasdaq: SOUN), a global leader in voice and conversational AI, delivers solutions that allow businesses to offer superior experiences to their customers.” Source: RevenueBase Database · checked Sep 14, 2026
6	Call Center Studio	Strong evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	51-200	567 contacts →
	Strong evidence “Call Center Studio is an AI-powered, cloud-based contact center software that redefines how businesses engage with their customers.” Source: RevenueBase Database · checked Sep 14, 2026
7	Alvaria CX	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	1,001-5,000	478 contacts →
	Strong 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 14, 2026
8	Ansafone Contact Centers	Strong evidence	Santa Ana, CA, United StatesHQ checked Sep 14, 2026	501-1,000	431 contacts →
	Strong evidence “About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.” Source: RevenueBase Database · checked Sep 14, 2026
9	Ipacesetters, LLC	Indirect evidence	Tulsa, United StatesHQ checked Sep 14, 2026	n/a	377 contacts →
	Indirect evidence “iPacesetters” Source: RevenueBase Database · checked Sep 14, 2026
10	Five Star Call Centers	Strong evidence	Sioux Falls, SD, United StatesHQ checked Sep 14, 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 14, 2026
11	ASAPP	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	310 contacts →
	Indirect evidence “ASAPP is an artificial intelligence solution provider committed to solving the toughest problems in customer service.” Source: RevenueBase Database · checked Sep 14, 2026
12	Outplex	Strong evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 14, 2026	1,001-5,000	301 contacts →
	Strong evidence “OutPLEX is a leading international digital and voice customer contact management services organization developing solutions for the world's most trusted brands.” Source: RevenueBase Database · checked Sep 14, 2026
13	Boomsourcing	Partial evidence	Lehi, UT, United StatesHQ checked Sep 14, 2026	501-1,000	256 contacts →
	Partial evidence “Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Source: RevenueBase Database · checked Sep 14, 2026
14	TCN	Strong evidence	St. George, UT, United StatesHQ checked Sep 14, 2026	201-500	246 contacts →
	Strong evidence “A leader in the hosted contact center technology industry since TCN, Inc.” Source: RevenueBase Database · checked Sep 14, 2026
15	Mass Markets	Strong evidence	Iowa City, IA, United StatesHQ checked Sep 14, 2026	501-1,000	235 contacts →
	Strong evidence “CONTACT CENTER SERVICES INNOVATIVE, HIGH-PERFORMANCE SOLUTIONS THAT WORK Mass Markets executes domestic omni-channel, inbound and outbound contact center services on behalf of…” Source: RevenueBase Database · checked Sep 14, 2026
16	Vail Systems	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	51-200	214 contacts →
	Indirect evidence “For over thirty years, Fortune 500 companies in financial services, retail and hospitality, software, and wireless communications industries have relied on Vail Systems’…” Source: RevenueBase Database · checked Sep 14, 2026
17	Incept	Strong evidence	Canton, OH, United StatesHQ checked Sep 14, 2026	501-1,000	200 contacts →
	Strong evidence “Incept is a multi-channel contact center that strengthens the relationship between you and your client with every interaction.” Source: RevenueBase Database · checked Sep 14, 2026
18	3clogic	Strong evidence	Rockville, MD, United StatesHQ checked Sep 14, 2026	51-200	191 contacts →
	Strong evidence “3CLogic transforms customer and employee experiences with its leading Cloud Contact Center and Voice AI capabilities purpose-built to enhance today's leading CRM and Customer…” Source: RevenueBase Database · checked Sep 14, 2026
19	Livevox	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	501-1,000	187 contacts →
	Strong evidence “LiveVox (Nasdaq: LVOX) is a proven cloud CCaaS platform that helps business leaders redefine customer engagement and transform their contact center’s performance.” Source: RevenueBase Database · checked Sep 14, 2026
20	Novelvox	Indirect evidence	Roswell, GA, United StatesHQ checked Sep 14, 2026	51-200	187 contacts →
	Indirect evidence “NovelVox is the execution layer for regulated CX.” Source: RevenueBase Database · checked Sep 14, 2026
21	Replicant	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	51-200	182 contacts →
	Strong evidence “AI that contact centers love” Source: RevenueBase Database · checked Sep 14, 2026
22	Gold Mountain Communications	Partial evidence	Springfield, MO, United StatesHQ checked Sep 14, 2026	201-500	180 contacts →
	Partial 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 14, 2026
23	Successkpi	Indirect evidence	Chantilly, VA, United StatesHQ checked Sep 14, 2026	51-200	171 contacts →
	Indirect evidence “SuccessKPI is a revolutionary on-demand insight and action platform removes the obstacles that agents, managers, and executives encounter in delivering exceptional customer…” Source: RevenueBase Database · checked Sep 14, 2026
24	Zero Variance By Ubiquity	Strong evidence	New York, NY, United StatesHQ checked Sep 14, 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 14, 2026
25	AVOXI	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	166 contacts →
	Partial evidence “At AVOXI, we believe that voice conversations are essential for businesses to connect with customers across the globe.” Source: RevenueBase Database · checked Sep 14, 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: voice enabled contact centers. 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 voice enabled contact centers.
Partial evidence: Its own public description names part of voice enabled contact centers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name voice enabled contact centers. 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 430 voice enabled contact centers based in the United States

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Voice enabled contact centers based in the United States at a glance

As of Sep 14, 2026

22.5%Verified-email coverage

73.2Average contacts per company

11-50Median size (employees)

6.7%Largest-city concentration · San Francisco

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

134

11-50

155

51-200

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 430 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 voice enabled contact centers, 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 “voice enabled contact centers”. 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 voice enabled contact centers), 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 voice enabled contact centers, 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, 7,078 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 14, 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.

Voice enabled contact centers by metro

Voice enabled contact centers in San Francisco29
Voice enabled contact centers in New York27

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 voice enabled contact centers, 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 voice enabled contact centers are there based in the United States?

RevenueBase identified 430 voice enabled contact centers 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?

24 7.ai, headquartered in Campbell, tops this list with the largest team on record.

Which city has the most voice enabled contact centers?

San Francisco leads with 29 headquartered companies, followed by New York (27) and Atlanta (18).

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 7,078 verified decision-maker contacts tracked across these 430 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 14, 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.