Company lists · Data refreshed September 2026

Top 25 Ip telephony companies based in the United States

RevenueBase identified 1,187 company matches for ip telephony companies associated with the United States as of September 2026 and tracks 17,382 professional contacts across them, including 5,538 with verified work emails. New York is the largest hub.

This list covers company matches for ip telephony companies 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 15, 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 15, 2026 How this list was built
1,187Companies
17,382Contacts tracked
5,538Verified emails
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The 25 largest ip telephony companies based in the United States

Ranked by team size
Top 25 of 1,187 company matches for ip telephony companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 15, 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 matchBoston, MA, United StatesHQ recorded Sep 15, 20261,001-5,0002,320 contacts →

Exact match

“As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
2Exact matchSunnyvale, CA, United StatesHQ recorded Sep 15, 20261,001-5,0001,254 contacts →

Exact match

“Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
3Exact matchSunnyvale, CA, United StatesHQ recorded Sep 15, 2026501-1,000606 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 · Sep 15, 2026 · View company records in RevenueBase
4Exact matchPlano, TX, United StatesHQ recorded Sep 15, 2026201-500435 contacts →

Exact match

“Family owned and proudly based in Plano, Texas, SpectrumVoIP has kept businesses talking and thriving since 2007.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
5Exact matchNew York, NY, United StatesHQ recorded Sep 15, 2026201-500398 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 · Sep 15, 2026 · View company records in RevenueBase
6Exact matchEdgewood, NY, United StatesHQ recorded Sep 15, 202651-200184 contacts →

Exact match

“Established in 1988, Forerunner Technologies, Inc.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
7Exact matchFairlawn, OH, United StatesHQ recorded Sep 15, 202651-200174 contacts →

Exact match

“FirstComm delivers smarter business communications and IT solutions that help organizations connect, collaborate, and scale with confidence.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
8Exact matchSacramento, CA, United StatesHQ recorded Sep 15, 2026n/a170 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 · Sep 15, 2026 · View company records in RevenueBase
9Exact matchSunnyvale, CA, United StatesHQ recorded Sep 15, 202651-200159 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 · Sep 15, 2026 · View company records in RevenueBase
10Exact matchBirmingham, AL, United StatesHQ recorded Sep 15, 202651-200154 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
11Exact matchSignal Hill, CA, United StatesHQ recorded Sep 15, 202611-50127 contacts →

Exact match

“Transcom Telecommunications (formerly called "Transcom Services") is a Veteran Owned Business founded in 1986 on 3 core ideas.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
12Exact matchSan Jose, CA, United StatesHQ recorded Sep 15, 202651-200126 contacts →

Exact match

“PanTerra is a business-class Unified Cloud Service Provider, seamlessly delivering unified communications, team collaboration, call center, file sync & share, and business…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
13Exact matchPlano, TX, United StatesHQ recorded Sep 15, 202651-200121 contacts →

Exact match

“Founded in 1987, Estech Systems (ESI), a Crexendo® company, delivers high-performance phone systems designed for growing businesses.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
14Exact matchWilmington, DE, United StatesHQ recorded Sep 15, 202611-50112 contacts →

Exact match

“KOL Telecom is the leading innovator of small business Voice over IP (VoIP) Phone services.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
15Exact matchMorristown, NJ, United StatesHQ recorded Sep 15, 202611-50108 contacts →

Exact match

“TeleCloud delivers modern Unified Communications, VoIP, and AI-powered communication solutions, paired with the personal, local service businesses deserve.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
16Exact matchChicago, IL, United StatesHQ recorded Sep 15, 202651-200107 contacts →

Exact match

“PEERLESS FOR ENTERPRISE: SIP Trunking: • Fast, flexible, reliable, secure, cost-effective • Fully automated SIP Channeling and Telephone Number ordering • Real-time activation of…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
17Exact matchNorth Miami, FL, United StatesHQ recorded Sep 15, 202651-20099 contacts →

Exact match

“Backed with over 25 years of industry experience, IPFone provides market-leading UCaaS, VoIP, SD-WAN, contact center solutions, and fiber Internet for business, all powered by…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
18Exact matchWaltham, MA, United StatesHQ recorded Sep 15, 202651-20099 contacts →

Exact match

“DSCI, a TelePacific company is now TPx Communications.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
19Exact matchPlainsboro, NJ, United StatesHQ recorded Sep 15, 202651-20091 contacts →

Exact match

“Alliance Global is a cloud-based business phone system provider exclusively for organizations that require professional communication features.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
20Exact matchCherry Hill, NJ, United StatesHQ recorded Sep 15, 202651-20083 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 · Sep 15, 2026 · View company records in RevenueBase
21Exact matchSouthfield, MI, United StatesHQ recorded Sep 15, 202651-20079 contacts →

Exact match

“Michigan-based TelNet Worldwide, Inc.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
22Exact matchHolyoke, CO, United StatesHQ recorded Sep 15, 202611-5077 contacts →

Exact match

“Full Service Telecommunications Provider.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
23Exact matchPlano, TX, United StatesHQ recorded Sep 15, 2026201-50075 contacts →

Exact match

“Established more than 20 years ago, NetFortris has grown to become the leading provider of secure cloud communication solutions to forward-thinking, mid-sized and enterprise…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
24Exact matchRogers, AR, United StatesHQ recorded Sep 15, 202651-20074 contacts →

Exact match

“TeleComp is a full-service technology company offering Enterprise VoIP phone systems, Fiber Bandwidth, Cybersecurity/Compliance and Managed Services.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
25Exact matchRoyersford, PA, United StatesHQ recorded Sep 15, 202611-5074 contacts →

Exact match

“Celebrating 25+ years as a trusted telecom partner fueling small and mid-sized organization’s business communications.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase

Showing 25 of 1,187 ip telephony companies based in the United States

See the full list, filter by size, metro and specialty, and access 5,538 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ip telephony companies based in the United States at a glance

As of Sep 15, 2026
31.9%Verified-email coverage
14.6Average contacts per company
11-50Median size (employees)
4.2%Largest-city concentration · New York
Sep 15, 2026Page data refreshed

Companies by employee count

1-10
514
11-50
516
51-200
125
201-500
22
501-1,000
2
1,001-5,000
5
5,001-10,000
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 1,187 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 “ip telephony companies” 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 5,538 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 15, 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 “ip telephony companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ip telephony companies are there based in the United States?

RevenueBase identified 1,187 company matches for ip telephony companies 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?

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

Which city has the most ip telephony companies?

New York leads with 50 company records, followed by Miami (23) and Dallas (20).

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 5,538 professional contacts with verified work emails tracked across these 1,187 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 15, 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.