Company lists · Data refreshed November 2026

Top 25 Telephony infrastructure providers based in the United States

RevenueBase identified 2,119 company matches for telephony infrastructure providers associated with the United States as of November 2026 and tracks 52,126 professional contacts across them, including 12,553 with verified work emails. New York is the largest hub.

This list covers company matches for telephony infrastructure 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
2,119Companies
52,126Contacts tracked
12,553Verified emails
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The 25 largest telephony infrastructure providers based in the United States

Ranked by team size
Top 25 of 2,119 company matches for telephony infrastructure 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 matchLittle Rock, AR, United StatesHQ recorded Nov 6, 202610001+7,649 contacts →

Exact match

“Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPhoenix, AZ, United StatesHQ recorded Nov 6, 20261,001-5,0005,608 contacts →

Exact match

“Cable One Business offers scalable, reliable, and efficient solutions so that the businesses we serve can be successful.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchStamford, CT, United StatesHQ recorded Nov 6, 202610001+4,135 contacts →

Exact match

“Our story starts with understanding that connectivity powers everything you do, and we make it stronger.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchQuincy, MA, United StatesHQ recorded Nov 6, 20261,001-5,0002,395 contacts →

Exact match

“Granite is a dynamic and rapidly growing company serving the exciting and demanding Telecommunications market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHerndon, VA, United StatesHQ recorded Nov 6, 20261,001-5,0001,124 contacts →

Exact match

“XO Communications is a Verizon company that provides the technology that helps business and wholesale customers compete in a hyper-connected economy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchVancouver, WA, United StatesHQ recorded Nov 6, 2026501-1,0001,123 contacts →

Exact match

“Integra is Allstream.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact 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
8Exact matchConcord, FL, United StatesHQ recorded Nov 6, 202651-200455 contacts →

Exact match

“NHC is THE communications STACK provider™.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 2026501-1,000447 contacts →

Exact match

“We unleash human momentum with collaboration, connectivity, and communications technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 2026201-500443 contacts →

Exact match

“Fusion Connect delivers innovative, cloud communications services that transform business infrastructure into a foundation for lasting success.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchJonesboro, AR, United StatesHQ recorded Nov 6, 2026201-500425 contacts →

Exact match

“At Ritter Communications, we have over a century-long tradition of providing quality residential and business communication services all across Arkansas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHuntsville, AL, United StatesHQ recorded Nov 6, 20261,001-5,000417 contacts →

Exact match

“With a strong twenty-five year history and a robust facilities-based network, Deltacom is one of the largest integrated business communications providers in the Southeast.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500400 contacts →

Exact match

“LOGIX FIBER NETWORKS is a well-established Texas-based provider of telecommunications services since 1983.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLake Mary, FL, United StatesHQ recorded Nov 6, 2026n/a373 contacts →

Exact match

“ACS has over three decades of experience and unparalleled expertise in the assessment and implementation of voice and data platforms and can provide solutions for telephone…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNew York, PA, United StatesHQ recorded Nov 6, 2026501-1,000323 contacts →

Exact match

“Founded in 1992, BCM One is a corporate communications company that powers business connectivity for organizations ranging from SMBs to global enterprises.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRochester, NY, United StatesHQ recorded Nov 6, 202651-200265 contacts →

Exact match

“ACC Business was founded on a simple idea: provide small to mid-sized businesses first-rate telecom services with dedicated customer service, all at a competitive price.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMiami, TX, United StatesHQ recorded Nov 6, 20261,001-5,000241 contacts →

Exact match

“FPL FiberNet is now part of Zayo Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBethpage, United StatesHQ recorded Nov 6, 2026201-500218 contacts →

Exact match

“Empower your business with fast, secure, and reliable connectivity solutions-all with the flexibility and support you deserve.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact 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
20Exact matchEdgewood, NY, United StatesHQ recorded Nov 6, 202651-200184 contacts →

Exact match

“Established in 1988, Forerunner Technologies, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchFairlawn, IL, United StatesHQ recorded Nov 6, 202651-200184 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 · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPlano, TX, United StatesHQ recorded Nov 6, 202651-200176 contacts →

Exact match

“Edge is an innovative provider of communications, data, systems security and business technology services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact 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
24Exact 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
25Exact matchOverland Park, KS, United StatesHQ recorded Nov 6, 2026201-500167 contacts →

Exact match

“You can leverage WiseConnect’s highly trained technicians for inside and outside plant projects in virtually any field.”

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

Showing 25 of 2,119 telephony infrastructure providers based in the United States

See the full list, filter by size, metro and specialty, and access 12,553 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telephony infrastructure providers based in the United States at a glance

As of Nov 6, 2026
24.1%Verified-email coverage
24.6Average contacts per company
11-50Median size (employees)
2.9%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
962
11-50
904
51-200
190
201-500
32
501-1,000
8
1,001-5,000
16
5,001-10,000
1
10001+
3

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 2,119 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 “telephony infrastructure 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 12,553 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.

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

How many telephony infrastructure providers are there based in the United States?

RevenueBase identified 2,119 company matches for telephony infrastructure 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?

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

Which city has the most telephony infrastructure providers?

New York leads with 61 company records, followed by Houston (45) and Austin (35).

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 12,553 professional contacts with verified work emails tracked across these 2,119 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.