Company lists · Data refreshed September 2026

Top 25 Enterprise network service providers based in the United States

Name: Enterprise network 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 28, 2026 328 companies tracked

RevenueBase identified 328 enterprise network service providers headquartered in the United States as of September 2026 and tracks 61,266 professional contacts across them, including 16,661 with verified work emails. Houston is the largest hub.

This list covers enterprise network 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 28, 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 28, 2026 86% judged on-target in blind review

328Companies

61,266Contacts tracked

16,661Verified emails

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The 25 largest enterprise network service providers based in the United States

Ranked by team size

Top 25 of 328 enterprise network service providers based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise network 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	Centurylink	Partial evidence	Monroe, LA, United StatesHQ checked Sep 28, 2026	10001+	22,745 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 28, 2026
2	Lumen Technologies	Partial evidence	Monroe, LA, United StatesHQ checked Sep 28, 2026	10001+	15,336 contacts →
	Partial 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 28, 2026
3	GTT	Partial evidence	Arlington, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,933 contacts →
	Partial 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 28, 2026
4	Cogent Communications	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,450 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 28, 2026
5	FLŌ Networks	Partial evidence	El Paso, TX, United StatesHQ checked Sep 28, 2026	501-1,000	1,250 contacts →
	Partial evidence “Today fast, flexible networks are the foundation of every successful organization.” Source: RevenueBase Database · checked Sep 28, 2026
6	NTT Global Networks	Partial evidence	Greenwood Village, CO, United StatesHQ checked Sep 28, 2026	501-1,000	716 contacts →
	Partial evidence “NTT Global Networks is a leading managed network services provider and a business unit of NTT Group.” Source: RevenueBase Database · checked Sep 28, 2026
7	Masergy	Partial evidence	Plano, TX, United StatesHQ checked Sep 28, 2026	501-1,000	480 contacts →
	Partial evidence “As a pioneer in software-defined networking, Masergy is a leading secure cloud networking platform for global businesses.” Source: RevenueBase Database · checked Sep 28, 2026
8	Firstlight Fiber	Indirect evidence	Portsmouth, NH, United StatesHQ checked Sep 28, 2026	501-1,000	470 contacts →
	Indirect evidence “We free IT leaders to do what matters.” Source: RevenueBase Database · checked Sep 28, 2026
9	Fusion Connect	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	201-500	425 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 28, 2026
10	ENA By Zayo	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 28, 2026	201-500	362 contacts →
	Indirect evidence “ENA by Zayo delivers innovative technology solutions supported by exceptional customer care.” Source: RevenueBase Database · checked Sep 28, 2026
11	Airespring	Strong evidence	Clearwater, FL, United StatesHQ checked Sep 28, 2026	201-500	361 contacts →
	Strong evidence “AireSpring empowers global enterprises with fully managed, best-of-breed IT and network solutions, delivering seamless connectivity, security, mobility, and unified communications.” Source: RevenueBase Database · checked Sep 28, 2026
12	Commandlink	Indirect evidence	Bothell, WA, United StatesHQ checked Sep 28, 2026	501-1,000	268 contacts →
	Indirect 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 28, 2026
13	Spectrotel	Partial evidence	Neptune, NJ, United StatesHQ checked Sep 28, 2026	201-500	260 contacts →
	Partial evidence “Spectrotel elevates your network with solutions built on cutting-edge technologies.” Source: RevenueBase Database · checked Sep 28, 2026
14	Fatpipe Networks	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 28, 2026	51-200	251 contacts →
	Partial evidence “FatPipe®, the inventor and multiple patents holder of software-defined wide area networking (SD-WAN), reliability, security, and WAN Optimization products, specializes in…” Source: RevenueBase Database · checked Sep 28, 2026
15	Everstream	Strong evidence	Cleveland, OH, United StatesHQ checked Sep 28, 2026	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 28, 2026
16	Global Linking Solutions, Charlotte, North Carolina	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 28, 2026	201-500	240 contacts →
	Partial evidence “GLS is a managed network and security services provider founded in 1998.” Source: RevenueBase Database · checked Sep 28, 2026
17	Enterasys Networks	Partial evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	199 contacts →
	Partial evidence “Enterasys Networks was acquired by Extreme Networks on Nov 1, 2013.” Source: RevenueBase Database · checked Sep 28, 2026
18	Telesystem	Partial evidence	Northwood, OH, United StatesHQ checked Sep 28, 2026	201-500	183 contacts →
	Partial evidence “For over 30 years, Telesystem has been a trusted technology partner for businesses across the country, delivering Managed Security, Networking, and Communication solutions backed…” Source: RevenueBase Database · checked Sep 28, 2026
19	Acumera IS NOW Scale Computing	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	201-500	174 contacts →
	Indirect evidence “Acumera has acquired Scale Computing™, bringing the two companies together under the Scale Computing™ brand to form the industry's largest edge-first platform company.” Source: RevenueBase Database · checked Sep 28, 2026
20	Openvpn INC	Partial evidence	Pleasanton, CA, United StatesHQ checked Sep 28, 2026	51-200	174 contacts →
	Partial evidence “OpenVPN® solutions help organizations to easily create secure, virtualized, reliable networks that ensure secure communications between on-premise applications, SaaS applications…” Source: RevenueBase Database · checked Sep 28, 2026
21	BCN	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 28, 2026	201-500	148 contacts →
	Partial evidence “As a Managed Network and Technology Solutions Provider since 1994, BCN delivers customized solutions that fuel growth, enhance security, and simplify complexity.” Source: RevenueBase Database · checked Sep 28, 2026
22	Syringa Networks	Partial evidence	Boise, ID, United StatesHQ checked Sep 28, 2026	51-200	138 contacts →
	Partial evidence “Syringa Networks is a global technology solutions leader.” Source: RevenueBase Database · checked Sep 28, 2026
23	Silver Peak	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 28, 2026	201-500	134 contacts →
	Partial 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 28, 2026
24	Netwolves	Partial evidence	Tampa, FL, United StatesHQ checked Sep 28, 2026	51-200	109 contacts →
	Partial evidence “Founded in 1998 and with strong roots in network security and software development, NetWolves has established itself as a proven Managed Network Provider (MNP).” Source: RevenueBase Database · checked Sep 28, 2026
25	Cytracom	Indirect evidence	Mckinney, TX, United StatesHQ checked Sep 28, 2026	51-200	105 contacts →
	Indirect evidence “Cytracom delivers infrastructure software purpose-built to empower managed service providers (MSPs) and IT professionals (ITSPs) with cloud solutions that connect and secure both…” Source: RevenueBase Database · checked Sep 28, 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 network 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 enterprise network service providers.
Partial evidence: Its own public description names part of enterprise network service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise network 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 328 enterprise network service providers based in the United States

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Enterprise network service providers based in the United States at a glance

As of Sep 28, 2026

27.2%Verified-email coverage

186.8Average contacts per company

11-50Median size (employees)

2.1%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

121

11-50

125

51-200

201-500

501-1,000

1,001-5,000

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 328 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 enterprise network 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 “enterprise network 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 enterprise network 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 enterprise network 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, 16,661 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 28, 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 network 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 enterprise network service providers are there based in the United States?

RevenueBase identified 328 enterprise network 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?

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

Which city has the most enterprise network service providers?

Houston leads with 7 headquartered companies, followed by Atlanta (6) and Austin (6).

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 16,661 verified decision-maker contacts tracked across these 328 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 28, 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.