Company lists · Data refreshed September 2026

Top 25 Enterprise connectivity providers based in the United States

Name: Enterprise connectivity providers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 349 companies tracked

RevenueBase identified 349 enterprise connectivity providers headquartered in the United States as of September 2026 and tracks 82,568 professional contacts across them, including 22,781 with verified work emails and 34,281 with mobile numbers. New York is the largest hub.

This list covers enterprise connectivity providers 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

349Companies

82,568Contacts tracked

22,781Verified emails

34,281Mobile numbers

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The 25 largest enterprise connectivity providers based in the United States

Ranked by team size

Top 25 of 349 enterprise connectivity providers based in the United States, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise connectivity providers: 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	Centurylink	Partial evidence	Monroe, LA, United States	10001+	22,865 contacts →
	Partial evidence “CenturyLink (NYSE: CTL) is a technology leader delivering hybrid networking, cloud connectivity, and security solutions to customers around the world.” Source: RevenueBase Database · checked Sep 2, 2026
2	Lumen Technologies	Indirect evidence	Monroe, LA, United States	10001+	15,743 contacts →
	Indirect evidence “Lumen is the trusted network for the AI-powered world, connecting people, data, and applications through one of the world’s most expansive fiber networks.” Source: RevenueBase Database · checked Sep 2, 2026
3	Verizon Business	Indirect evidence	Basking Ridge, NJ, United States	10001+	12,834 contacts →
	Indirect evidence “You’re more than a business, agency or organization leader.” Source: RevenueBase Database · checked Sep 2, 2026
4	Windstream	Indirect evidence	Little Rock, AR, United States	10001+	7,315 contacts →
	Indirect evidence “Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.” Source: RevenueBase Database · checked Sep 2, 2026
5	Spectrum Business	Partial evidence	Stamford, CT, United States	10001+	3,030 contacts →
	Partial evidence “Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Source: RevenueBase Database · checked Sep 2, 2026
6	GTT	Indirect evidence	Arlington, VA, United States	1,001-5,000	2,970 contacts →
	Indirect evidence “GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…” Source: RevenueBase Database · checked Sep 2, 2026
7	Cogent Communications	Partial evidence	Washington, DC, United States	1,001-5,000	2,432 contacts →
	Partial evidence “Cogent is one of the world's largest Internet Service Providers, delivering high quality Internet, Ethernet, Transport, and Colocation services to more than 138,025 Enterprise and…” Source: RevenueBase Database · checked Sep 2, 2026
8	XO Communications	Indirect evidence	Herndon, VA, United States	1,001-5,000	1,005 contacts →
	Indirect evidence “XO Communications is a Verizon company that provides the technology that helps business and wholesale customers compete in a hyper-connected economy.” Source: RevenueBase Database · checked Sep 2, 2026
9	SEGRA	Partial evidence	Charlotte, NC, United States	1,001-5,000	961 contacts →
	Partial evidence “Segra owns and operates a wide and dense fiber-optic infrastructure footprint that provides state-of-the-art connectivity, cybersecurity, voice, cloud and colocation solutions…” Source: RevenueBase Database · checked Sep 2, 2026
10	Uniti Fiber	Indirect evidence	Mobile, AL, United States	501-1,000	591 contacts →
	Indirect evidence “Uniti Fiber is a wholly owned subsidiary of Uniti Group,a publicly traded Real Estate Investment Trust (REIT).” Source: RevenueBase Database · checked Sep 2, 2026
11	Cambium Networks	Strong evidence	Hoffman Estates, IL, United States	501-1,000	536 contacts →
	Strong evidence “Cambium Networks enables service providers, enterprises, industrial organizations, and governments to deliver exceptional digital experiences and device connectivity with…” Source: RevenueBase Database · checked Sep 2, 2026
12	Expereo	Indirect evidence	Reston, VA, United States	201-500	486 contacts →
	Indirect evidence “Expereo is a Manage Network as a Services company that connects people, places and things anywhere.” Source: RevenueBase Database · checked Sep 2, 2026
13	Firstlight Fiber	Indirect evidence	Brunswick, ME, United States	501-1,000	472 contacts →
	Indirect evidence “We free IT leaders to do what matters.” Source: RevenueBase Database · checked Sep 2, 2026
14	Fusion Connect	Indirect evidence	Atlanta, GA, United States	201-500	423 contacts →
	Indirect evidence “Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Source: RevenueBase Database · checked Sep 2, 2026
15	China Telecom Americas	Indirect evidence	New York, NY, United States	201-500	385 contacts →
	Indirect evidence “China Telecom (Americas) Corporation (CTA) provides customized, cost-effective and integrated network and communication solutions to its diverse base of customers.” Source: RevenueBase Database · checked Sep 2, 2026
16	Logix Fiber Networks	Indirect evidence	Austin, TX, United States	201-500	371 contacts →
	Indirect evidence “LOGIX FIBER NETWORKS is a well-established Texas-based provider of telecommunications services since 1983.” Source: RevenueBase Database · checked Sep 2, 2026
17	ENA By Zayo	Indirect evidence	Indianapolis, IN, United States	201-500	361 contacts →
	Indirect evidence “ENA by Zayo delivers innovative technology solutions supported by exceptional customer care.” Source: RevenueBase Database · checked Sep 2, 2026
18	Commandlink	Partial evidence	Bothell, WA, United States	501-1,000	267 contacts →
	Partial evidence “CommandLink is the only global infrastructure provider that unifies connectivity, security, voice, and AI into one intelligent platform-backed by world-class support.” Source: RevenueBase Database · checked Sep 2, 2026
19	Everstream	Strong evidence	Indianapolis, IN, United States	201-500	247 contacts →
	Strong evidence “Everstream has raised the bar for business connectivity, delivering a Business-Only Fiber Network with the speed, reliability, scale and performance that today’s enterprises…” Source: RevenueBase Database · checked Sep 2, 2026
20	FPL Fibernet	Indirect evidence	Irving, TX, United States	1,001-5,000	238 contacts →
	Indirect evidence “FPL FiberNet is now part of Zayo Group.” Source: RevenueBase Database · checked Sep 2, 2026
21	METER	Indirect evidence	San Francisco, CA, United States	201-500	190 contacts →
	Indirect evidence “Meter provides internet infrastructure for businesses.” Source: RevenueBase Database · checked Sep 2, 2026
22	Gold Data	Indirect evidence	Sunrise, FL, United States	201-500	144 contacts →
	Indirect evidence “Gold Data is a U.S-based, multinational telecommunications and technology company with over 26 years of experience powering the digital infrastructure of the Americas.” Source: RevenueBase Database · checked Sep 2, 2026
23	Silver Peak	Strong evidence	Santa Clara, CA, United States	201-500	133 contacts →
	Strong evidence “Silver Peak helps enterprises and service providers flexibly and securely connect users to applications via the most cost-effective source of connectivity available.” Source: RevenueBase Database · checked Sep 2, 2026
24	Firstdigital	Indirect evidence	Draper, UT, United States	201-500	123 contacts →
	Indirect evidence “FirstDigital is the largest privately owned all fiber network in the Intermountain West.” Source: RevenueBase Database · checked Sep 2, 2026
25	Electric Lightwave	Indirect evidence	Vancouver, WA, United States	1,001-5,000	75 contacts →
	Indirect evidence “Electric Lightwave is now Zayo.” Source: RevenueBase Database · checked Sep 2, 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: enterprise connectivity providers. 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 enterprise connectivity providers.
Partial evidence: Its own public description names part of enterprise connectivity providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise connectivity providers. 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 349 enterprise connectivity providers based in the United States

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Enterprise connectivity providers based in the United States at a glance

As of Sep 2, 2026

27.6%Verified-email coverage

41.5%Mobile-number coverage

236.6Average contacts per company

11-50Median size (employees)

4.6%Largest-city concentration · New York

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

115

11-50

131

51-200

201-500

501-1,000

1,001-5,000

10001+

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 enterprise connectivity providers, 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 “enterprise connectivity providers”. 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 enterprise connectivity providers), 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 enterprise connectivity providers, 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, 22,781 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 2, 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 enterprise connectivity providers, 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 enterprise connectivity providers are there based in the United States?

RevenueBase identified 349 enterprise connectivity providers 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?

Centurylink, headquartered in Monroe, tops this list with the largest team on record.

Which city has the most enterprise connectivity providers?

New York leads with 16 headquartered companies, followed by Los Angeles (10) and Charlotte (9).

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 22,781 verified decision-maker contacts tracked across these 349 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 2, 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.