Company lists · Data refreshed November 2026

Top 25 Voi providers based in the United States

RevenueBase identified 727 company matches for voi providers associated with the United States as of November 2026 and tracks 7,685 professional contacts across them, including 2,151 with verified work emails. New York is the largest hub.

This list covers company matches for voi providers 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 November 6, 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 Nov 6, 2026 How this list was built
727Companies
7,685Contacts tracked
2,151Verified emails
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The 25 largest voi providers based in the United States

Ranked by team size
Top 25 of 727 company matches for voi providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchSunnyvale, CA, United StatesHQ recorded Nov 6, 2026501-1,000651 contacts →

Exact match

“Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026201-500433 contacts →

Exact match

“Founded in 2008 by veteran telecommunication entrepreneurs, Phone.com provides over businesses with comprehensive, flexible, and reliable cloud-based communication and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchTroy, MI, United StatesHQ recorded Nov 6, 2026201-500199 contacts →

Exact match

“VoIP Office, founded in 2004, provides cloud-based communications and hosted PBX solutions that combine traditional PBX features with VoIP functionality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSacramento, CA, United StatesHQ recorded Nov 6, 2026n/a175 contacts →

Exact match

“Fortis is a Sacramento Area provider of managed IT services, hosted VoIP, and high speed, redundant internet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSunnyvale, CA, United StatesHQ recorded Nov 6, 202651-200170 contacts →

Exact match

“Zultys is a premier provider of omnichannel, Unified Communications, hosted business phone services and premise-based communications systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBirmingham, AL, United StatesHQ recorded Nov 6, 202651-200153 contacts →

Exact match

“IT Voice specializes in Managed IT and VoIP solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 2026201-500146 contacts →

Exact match

“For over 25 years, Cypress Communications has been helping small-to-medium enterprises (SMEs) connect, communicate, collaborate and continue® with a range of fully hosted and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAmherst, NY, United StatesHQ recorded Nov 6, 202611-50112 contacts →

Exact match

“We Solve Problems and Create Solutions with VoIP.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchCherry Hill, NY, United StatesHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“Powering Your Companies Voice & More Utilizing the latest technologies in voice such as VoIP (Voice-Over-Internet-Protocol) and other networking technologies, we can provide your…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAudubon, PA, United StatesHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“NetCarrier Telecom, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHolyoke, CO, United StatesHQ recorded Nov 6, 202611-5079 contacts →

Exact match

“Full Service Telecommunications Provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNorth Venice, FL, United StatesHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Lightspeed Voice is an AI-powered VoIP solutions provider at the forefront of transforming business communications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchStaten Island, United StatesHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Headquartered in New York City, InterGlobe Communications is a one stop network service provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“Verve is a client-focused nationwide provider of Cloud-Hosted Voice and Internet solutions for the SMB market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchEatontown, NJ, United StatesHQ recorded Nov 6, 202651-20058 contacts →

Exact match

“Established in 1995 as a premier Internet Service Provider in New Jersey, Monmouth Telecom has evolved into a comprehensive provider offering cutting-edge and cost-effective…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLouisville, KY, United StatesHQ recorded Nov 6, 2026n/a58 contacts →

Exact match

“West IP Communications, a wholly owned subsidiary of West Corporation, is a leading provider of cloud-based communications for the enterprise - including MPLS-based application…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSouthfield, MI, United StatesHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“It’s no secret that staying connected and accessible is absolutely crucial in today’s business environment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSpringfield, VA, United StatesHQ recorded Nov 6, 202611-5056 contacts →

Exact match

“Since 1980, TCI has provided advanced telecommunication, voice, data and networking solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMiami Lakes, FL, United StatesHQ recorded Nov 6, 202611-5054 contacts →

Exact match

“OIT, LLC is a service-first organization that specializes in telecommunications and distributed networking.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchHolmdel, NJ, United StatesHQ recorded Nov 6, 20261,001-5,00050 contacts →

Exact match

“Vonage Business is the leading pure-play provider of unified cloud communications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchTroy, MI, United StatesHQ recorded Nov 6, 2026201-50047 contacts →

Exact match

“SRVR - the leader in International Telecommunications – helps our customers connect with the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLoomis, CA, United StatesHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“TEAMSOS provides innovative technology solutions that advance businesses and the lives of people everywhere.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMobile, AL, United StatesHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“In an industry of tech giants and convoluted jargon, it’s easy to get overwhelmed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchKaty, TX, United StatesHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Shamrock Communications is a UCaas VoIP Cloud provider located in Houston, Texas”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBrooklyn, United StatesHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“TeleGo Communications provides enterprise-grade Hosted VoIP and Unified Communications to businesses and institutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 727 voi providers based in the United States

See the full list, filter by size, metro and specialty, and access 2,151 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Voi providers based in the United States at a glance

As of Nov 6, 2026
28.0%Verified-email coverage
10.6Average contacts per company
11-50Median size (employees)
4.1%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
325
11-50
315
51-200
65
201-500
16
501-1,000
1
1,001-5,000
1
10001+
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 727 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 “voi providers” 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 2,151 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 November 6, 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.

Voi providers 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 “voi providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voi providers are there based in the United States?

RevenueBase identified 727 company matches for voi providers associated with the United States as of November 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?

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

Which city has the most voi providers?

New York leads with 30 company records, followed by Miami (18) and Austin (11).

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 2,151 professional contacts with verified work emails tracked across these 727 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 November 6, 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.