Company lists · Data refreshed August 2026

Top 25 Cloud networking companies based in the United States

Name: Cloud networking companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 331 companies tracked

RevenueBase identified 331 cloud networking companies headquartered in the United States as of August 2026 and tracks 53,997 professional contacts across them, including 17,741 with verified work emails and 17,848 with mobile numbers. San Jose is the largest hub.

This list covers cloud networking companies 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 August 31, 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 Aug 31, 2026 86% judged on-target in blind review

331Companies

53,997Contacts tracked

17,741Verified emails

17,848Mobile numbers

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The 25 largest cloud networking companies based in the United States

Ranked by team size

Top 25 of 331 cloud networking companies based in the United States, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to cloud networking companies: 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	Strong evidence	Monroe, LA, United States	10001+	22,865 contacts →
	Strong 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 Aug 31, 2026
2	Cloudflare	Partial evidence	Washington, DC, United States	1,001-5,000	5,795 contacts →
	Partial evidence “Cloudflare, Inc.(NYSE: NET) is the leading connectivity cloud company.” Source: RevenueBase Database · checked Aug 31, 2026
3	Extreme Networks	Strong evidence	Salem, NH, United States	1,001-5,000	3,161 contacts →
	Strong evidence “Extreme Networks, Inc.(EXTR) is a leader in AI-powered cloud networking, delivering a unified platform that simplifies and secures IT operations.” Source: RevenueBase Database · checked Aug 31, 2026
4	Netskope	Strong evidence	Santa Clara, CA, United States	1,001-5,000	3,025 contacts →
	Strong evidence “Netskope (NASDAQ: NTSK), a leader in modern security and networking for the cloud and AI era, addresses the needs of both security and networking teams by providing optimized…” Source: RevenueBase Database · checked Aug 31, 2026
5	GTT	Partial evidence	Arlington, VA, United States	1,001-5,000	2,970 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 Aug 31, 2026
6	Infoblox	Partial evidence	Tacoma, WA, United States	1,001-5,000	2,808 contacts →
	Partial evidence “Infoblox unites networking and security to deliver unmatched performance and protection.” Source: RevenueBase Database · checked Aug 31, 2026
7	Versa Networks	Partial evidence	Santa Clara, CA, United States	501-1,000	798 contacts →
	Partial evidence “Versa, the global leader in unified networking and security, enables organizations to create self-protecting networks that radically simplify and automate their network and…” Source: RevenueBase Database · checked Aug 31, 2026
8	NTT Global Networks	Indirect evidence	Greenwood Village, CO, United States	501-1,000	716 contacts →
	Indirect evidence “NTT Global Networks is a leading managed network services provider and a business unit of NTT Group.” Source: RevenueBase Database · checked Aug 31, 2026
9	A10 Networks, INC	Partial evidence	San Jose, CA, United States	501-1,000	673 contacts →
	Partial evidence “A10 Networks provides security and infrastructure solutions for on-premises, hybrid cloud, and edge-cloud environments.” Source: RevenueBase Database · checked Aug 31, 2026
10	Skyhigh Security	Partial evidence	San Jose, CA, United States	501-1,000	647 contacts →
	Partial evidence “Skyhigh Security protects organizations with cloud-native security solutions that are both data-aware and simple to use.” Source: RevenueBase Database · checked Aug 31, 2026
11	Masergy	Strong evidence	Plano, TX, United States	501-1,000	485 contacts →
	Strong evidence “As a pioneer in software-defined networking, Masergy is a leading secure cloud networking platform for global businesses.” Source: RevenueBase Database · checked Aug 31, 2026
12	Spectrumvoip	Indirect evidence	Plano, TX, United States	201-500	425 contacts →
	Indirect evidence “Family owned and proudly based in Plano, Texas, SpectrumVoIP has kept businesses talking and thriving since 2007.” Source: RevenueBase Database · checked Aug 31, 2026
13	Coriant, INC	Strong evidence	Naperville, IL, United States	1,001-5,000	399 contacts →
	Strong evidence “Coriant delivers innovative and dynamic networking solutions for a fast-changing and cloud-centric business world.” Source: RevenueBase Database · checked Aug 31, 2026
14	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 Aug 31, 2026
15	VULTR	Partial evidence	West Palm Beach, FL, United States	201-500	341 contacts →
	Partial evidence “Vultr is on a mission to make high-performance cloud infrastructure easy to use, affordable, and locally accessible for enterprises and AI innovators around the world.” Source: RevenueBase Database · checked Aug 31, 2026
16	INAP	Partial evidence	Atlanta, GA, United States	51-200	327 contacts →
	Partial evidence “Internap Holding LLC (INAP) is a global provider of performance-driven, secure hybrid infrastructure solutions, enabling technology leaders to simplify their cloud journeys and…” Source: RevenueBase Database · checked Aug 31, 2026
17	Nsfocus	Indirect evidence	Santa Clara, CA, United States	1,001-5,000	284 contacts →
	Indirect evidence “NSFOCUS is an iconic internet and application security company with over 20 years of proven industry experience.” Source: RevenueBase Database · checked Aug 31, 2026
18	IBOSS	Partial evidence	Boston, MA, United States	201-500	277 contacts →
	Partial evidence “iboss is a leading Zero Trust Secure Access Service Edge (SASE) cloud security platform that consolidates network and security technologies into a single cloud-based service.” Source: RevenueBase Database · checked Aug 31, 2026
19	Tailscale	Indirect evidence	Berkeley, CA, United States	201-500	244 contacts →
	Indirect evidence “For teams who want secure, private networks without weeks of setup and configuration, Tailscale makes it easy.” Source: RevenueBase Database · checked Aug 31, 2026
20	Global Linking Solutions, Charlotte, North Carolina	Indirect evidence	Knoxville, TN, United States	201-500	243 contacts →
	Indirect evidence “GLS is a managed network and security services provider founded in 1998.” Source: RevenueBase Database · checked Aug 31, 2026
21	PI Data Centers	Indirect evidence	Milpitas, CA, United States	201-500	201 contacts →
	Indirect evidence “Pi DATACENTERS® is a story envisioned by technocrats, led by its Founder & CEO, Mr.” Source: RevenueBase Database · checked Aug 31, 2026
22	solo.io	Partial evidence	Cambridge, MA, United States	51-200	200 contacts →
	Partial evidence “Solo.io is reimagining infrastructure for cloud and AI, uniting secure, seamless cloud connectivity with AI-ready, agentic infrastructure.” Source: RevenueBase Database · checked Aug 31, 2026
23	Openvpn INC	Indirect evidence	Pleasanton, CA, United States	51-200	176 contacts →
	Indirect 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 Aug 31, 2026
24	Silver Peak	Indirect evidence	Santa Clara, CA, United States	201-500	133 contacts →
	Indirect 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 Aug 31, 2026
25	Nuvolat Cloud Group	Partial evidence	Pittsburgh, PA, United States	51-200	125 contacts →
	Partial evidence “Nuvolat® brings together leading experts from the world of cloud, datacenter and IT services.” Source: RevenueBase Database · checked Aug 31, 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: cloud networking companies. 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 cloud networking companies.
Partial evidence: Its own public description names part of cloud networking companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cloud networking companies. 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 331 cloud networking companies based in the United States

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Cloud networking companies based in the United States at a glance

As of Aug 31, 2026

32.9%Verified-email coverage

33.1%Mobile-number coverage

163.1Average contacts per company

11-50Median size (employees)

4.5%Largest-city concentration · San Jose

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

102

11-50

116

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 cloud networking companies, 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 “cloud networking companies”. 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 cloud networking companies), 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 cloud networking companies, 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, 17,741 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 August 31, 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 cloud networking companies, 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 cloud networking companies are there based in the United States?

RevenueBase identified 331 cloud networking companies headquartered in the United States as of August 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 cloud networking companies?

San Jose leads with 15 headquartered companies, followed by New York (14) and Santa Clara (11).

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 17,741 verified decision-maker contacts tracked across these 331 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.