Company lists · Data refreshed September 2026

Top 25 Business internet service providers based in the United States

Name: Business internet service 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 16, 2026 484 companies tracked

RevenueBase identified 484 business internet service providers headquartered in the United States as of September 2026 and tracks 62,893 professional contacts across them, including 11,915 with verified work emails. New York is the largest hub.

This list covers business internet service 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 16, 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 16, 2026 86% judged on-target in blind review

484Companies

62,893Contacts tracked

11,915Verified emails

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The 25 largest business internet service providers based in the United States

Ranked by team size

Top 25 of 484 business internet service providers based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to business internet service 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	Verizon Business	Indirect evidence	Basking Ridge, NJ, United StatesHQ checked Sep 16, 2026	10001+	12,837 contacts →
	Indirect evidence “You’re more than a business, agency or organization leader.” Source: RevenueBase Database · checked Sep 16, 2026
2	Earthlink	Indirect evidence	Sandy Springs, United StatesHQ checked Sep 16, 2026	n/a	10,818 contacts →
	Indirect evidence “EarthLink is a top U.S.” Source: RevenueBase Database · checked Sep 16, 2026
3	Windstream	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 16, 2026	10001+	7,275 contacts →
	Indirect evidence “Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
4	Cable ONE	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 16, 2026	1,001-5,000	6,379 contacts →
	Indirect evidence “Cable One Business offers scalable, reliable, and efficient solutions so that the businesses we serve can be successful.” Source: RevenueBase Database · checked Sep 16, 2026
5	Spectrum Business	Indirect evidence	Stamford, CT, United StatesHQ checked Sep 16, 2026	10001+	3,044 contacts →
	Indirect evidence “Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Source: RevenueBase Database · checked Sep 16, 2026
6	Hughes	Indirect evidence	Germantown, MD, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,459 contacts →
	Indirect evidence “Hughes Network Systems, LLC (HUGHES), an innovator in satellite and multi-transport technologies and networks since 1971, provides broadband equipment and services; managed…” Source: RevenueBase Database · checked Sep 16, 2026
7	Hawaiian Telcom	Indirect evidence	Honolulu, HI, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,131 contacts →
	Indirect evidence “Over the last two decades our mission has evolved dramatically.” Source: RevenueBase Database · checked Sep 16, 2026
8	COX Business	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 16, 2026	10001+	1,094 contacts →
	Indirect evidence “Cox Business provides a wide range of technology solutions for businesses of all sizes with reliable, scalable products and services tailored to your unique needs.” Source: RevenueBase Database · checked Sep 16, 2026
9	XO Communications	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,000 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 16, 2026
10	SEGRA	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	950 contacts →
	Indirect 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 16, 2026
11	Liberty Networks	Indirect evidence	Miami, FL, United StatesHQ checked Sep 16, 2026	n/a	680 contacts →
	Indirect evidence “At Liberty Networks we invest and innovate with our customers and the quality of our complete portfolio of IT and Communications Services in mind.” Source: RevenueBase Database · checked Sep 16, 2026
12	Firstlight Fiber	Indirect evidence	Portsmouth, NH, United StatesHQ checked Sep 16, 2026	501-1,000	470 contacts →
	Indirect evidence “We free IT leaders to do what matters.” Source: RevenueBase Database · checked Sep 16, 2026
13	Grande Communications Networks LLC	Strong evidence	San Marcos, TX, United StatesHQ checked Sep 16, 2026	501-1,000	431 contacts →
	Strong evidence “Astound Broadband powered by Grande connects you to a world of astounding possibilities with our award-winning internet service and 24x7 local customer support.” Source: RevenueBase Database · checked Sep 16, 2026
14	ENA By Zayo	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 16, 2026	201-500	362 contacts →
	Indirect evidence “ENA by Zayo delivers innovative technology solutions supported by exceptional customer care.” Source: RevenueBase Database · checked Sep 16, 2026
15	Nex-Tech	Indirect evidence	Hays, KS, United StatesHQ checked Sep 16, 2026	201-500	319 contacts →
	Indirect evidence “Nex-Tech connects thousands of people and businesses through a robust broadband network with cutting-edge technology.” Source: RevenueBase Database · checked Sep 16, 2026
16	BCM ONE	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	501-1,000	308 contacts →
	Indirect evidence “Founded in 1992, BCM One is a corporate communications company that powers business connectivity for organizations ranging from SMBs to global enterprises.” Source: RevenueBase Database · checked Sep 16, 2026
17	Clearwave Fiber	Indirect evidence	Savannah, GA, United StatesHQ checked Sep 16, 2026	201-500	288 contacts →
	Indirect evidence “Our fast, reliable and secure fiber network provides our customers with the connectivity they need to support their needs now and in the future.” Source: RevenueBase Database · checked Sep 16, 2026
18	Xmission	Strong evidence	Salt Lake City, UT, United StatesHQ checked Sep 16, 2026	n/a	268 contacts →
	Strong evidence “Since 1993, XMission has provided high-quality Internet connections, web and email hosting, digital phone, professional services, and colocation to residents and businesses.” Source: RevenueBase Database · checked Sep 16, 2026
19	Everstream	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 16, 2026	201-500	247 contacts →
	Indirect 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 16, 2026
20	Toast.Net Internet Service	Strong evidence	Toledo, OH, United StatesHQ checked Sep 16, 2026	n/a	239 contacts →
	Strong evidence “TOAST.net was founded as an Internet Service Provider (ISP) in 1996 and has evolved as an Internet & Managed Services provider specializing in Cloud Services.” Source: RevenueBase Database · checked Sep 16, 2026
21	Dobson Fiber	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 16, 2026	201-500	226 contacts →
	Indirect evidence “Since 1936, Dobson Fiber has been connecting local communities.” Source: RevenueBase Database · checked Sep 16, 2026
22	Vexus Fiber	Indirect evidence	Lubbock, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	220 contacts →
	Indirect evidence “Vexus Fiber is now a part of Metronet.” Source: RevenueBase Database · checked Sep 16, 2026
23	Optimum Business	Indirect evidence	Bethpage, United StatesHQ checked Sep 16, 2026	201-500	210 contacts →
	Indirect evidence “Empower your business with fast, secure, and reliable connectivity solutions-all with the flexibility and support you deserve.” Source: RevenueBase Database · checked Sep 16, 2026
24	METER	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	201-500	193 contacts →
	Strong evidence “Meter provides internet infrastructure for businesses.” Source: RevenueBase Database · checked Sep 16, 2026
25	Lightower Fiber Networks	Indirect evidence	Boxborough, MA, United StatesHQ checked Sep 16, 2026	1,001-5,000	180 contacts →
	Indirect evidence “Lightower is now part of Zayo Group.” Source: RevenueBase Database · checked Sep 16, 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: business internet service 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 business internet service providers.
Partial evidence: Its own public description names part of business internet service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business internet service 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 484 business internet service providers based in the United States

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Business internet service providers based in the United States at a glance

As of Sep 16, 2026

18.9%Verified-email coverage

129.9Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · New York

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

185

11-50

174

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 484 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 business internet service 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 “business internet service 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 business internet service 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 business internet service 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, 11,915 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 16, 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 business internet service 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 business internet service providers are there based in the United States?

RevenueBase identified 484 business internet service 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?

Verizon Business, headquartered in Basking Ridge, tops this list with the largest team on record.

Which city has the most business internet service providers?

New York leads with 14 headquartered companies, followed by Miami (10) and Houston (8).

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 11,915 verified decision-maker contacts tracked across these 484 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 16, 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.