Company lists · Data refreshed October 2026

Top 25 Managed security service providers (mssp) suppliers based in the United States

Name: Managed security service providers (mssp) suppliers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 19, 2026 4,941 companies tracked

RevenueBase identified 4,941 company matches for managed security service providers (mssp) suppliers associated with the United States as of October 2026 and tracks 150,074 professional contacts across them, including 64,177 with verified work emails. New York is the largest hub.

This list covers company matches for managed security service providers (mssp) suppliers 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 October 19, 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 Oct 19, 2026 How this list was built

4,941Companies

150,074Contacts tracked

64,177Verified emails

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The 25 largest managed security service providers (mssp) suppliers based in the United States

Ranked by team size

Top 25 of 4,941 company matches for managed security service providers (mssp) suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Palo Alto Networks	Exact match	Santa Clara, CA, United StatesHQ recorded Oct 19, 2026	10001+	21,187 contacts →
	Exact match “Palo Alto Networks, the global cybersecurity leader, is shaping the cloud-centric future with technology that is transforming the way people and organizations operate.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Oct 19, 2026	10001+	14,972 contacts →
	Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Oct 19, 2026	10001+	11,671 contacts →
	Exact match “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4	Arctic Wolf	Exact match	Eden Prairie, MN, United StatesHQ recorded Oct 19, 2026	1,001-5,000	3,278 contacts →
	Exact match “Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5	Rapid7	Exact match	Boston, MA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	2,913 contacts →
	Exact match “Rapid7, Inc.(NASDAQ: RPD) is a global leader in AI-powered managed cybersecurity operations, trusted to advance organizations’ cyber resilience.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6	Barracuda	Exact match	Campbell, CA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	2,272 contacts →
	Exact match “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Oct 19, 2026	1,001-5,000	2,128 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Oct 19, 2026	1,001-5,000	1,370 contacts →
	Exact match “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	1,328 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10	Imperva	Exact match	Austin, TX, United StatesHQ recorded Oct 19, 2026	10001+	1,166 contacts →
	Exact match “On Dec.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11	Watchguard Technologies	Exact match	Seattle, WA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	1,131 contacts →
	Exact match “WatchGuard® Technologies, Inc.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12	IT By Design	Exact match	Freehold, NJ, United StatesHQ recorded Oct 19, 2026	501-1,000	970 contacts →
	Exact match “For more than 20 years, IT By Design has been the growth partner MSPs trust to scale profitably.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13	Secureworks	Exact match	Atlanta, GA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	905 contacts →
	Exact match “Secureworks, a Sophos Company, empowers organizations worldwide with advanced Managed Detection and Response (MDR) services, our security operations platform Taegis XDR, and…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14	Zerofox	Exact match	Baltimore, MD, United StatesHQ recorded Oct 19, 2026	501-1,000	886 contacts →
	Exact match “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Oct 19, 2026	1,001-5,000	864 contacts →
	Exact match “Today’s threatscape is relentless.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16	Netenrich	Exact match	San Jose, CA, United StatesHQ recorded Oct 19, 2026	501-1,000	856 contacts →
	Exact match “Netenrich is redefining security operations by shifting the focus from "efficiency"(speed) to "efficacy"(comprehensive coverage).” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17	Huntress	Exact match	Columbia, MD, United StatesHQ recorded Oct 19, 2026	501-1,000	792 contacts →
	Exact match “Protect Your Endpoints, Identities, Logs, and Employees.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18	Levelblue	Exact match	Dallas, TX, United StatesHQ recorded Oct 19, 2026	1,001-5,000	784 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19	IT Solutions	Exact match	Fort Washington, PA, United StatesHQ recorded Oct 19, 2026	501-1,000	751 contacts →
	Exact match “IT Solutions Technology Partners (ITS) is a trusted managed services provider with 30+ years of experience helping organizations leverage technology as a competitive advantage.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20	DATTO	Exact match	Norwalk, CT, United StatesHQ recorded Oct 19, 2026	1,001-5,000	686 contacts →
	Exact match “As a leading global provider of security and cloud-based software solutions purpose-built for MSPs, Datto, a Kaseya company, believes there is no limit to what SMBs can achieve…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21	Bluevoyant	Exact match	New York, NY, United StatesHQ recorded Oct 19, 2026	501-1,000	655 contacts →
	Exact match “BlueVoyant’s Cyber Defense Platform (CDP) integrates MDR, TPRM, and DRP into a seamless, scalable solution.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22	Telos Corporation	Exact match	Ashburn, VA, United StatesHQ recorded Oct 19, 2026	501-1,000	655 contacts →
	Exact match “Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23	Vikingcloud	Exact match	Chicago, IL, United StatesHQ recorded Oct 19, 2026	1,001-5,000	650 contacts →
	Exact match “VikingCloud delivers cybersecurity and compliance solutions that simply work.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24	Network Intelligence	Exact match	Plano, TX, United StatesHQ recorded Oct 19, 2026	501-1,000	643 contacts →
	Exact match “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25	Integris	Exact match	Cranbury Township, NJ, United StatesHQ recorded Oct 19, 2026	501-1,000	610 contacts →
	Exact match “Integris is a national leader in future-ready Managed Services, delivering innovative solutions that drive digital maturity for small and midsize businesses.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “managed security service providers (mssp) suppliers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 4,941 managed security service providers (mssp) suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 64,177 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Managed security service providers (mssp) suppliers based in the United States at a glance

As of Oct 19, 2026

42.8%Verified-email coverage

30.4Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · New York

Oct 19, 2026Page data refreshed

Companies by employee count

1-10

2,519

11-50

1,713

51-200

498

201-500

107

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 4,941 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 “managed security service providers (mssp) suppliers” 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 64,177 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 October 19, 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.

Managed security service providers (mssp) suppliers by metro

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 “managed security service providers (mssp) suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many managed security service providers (mssp) suppliers are there based in the United States?

RevenueBase identified 4,941 company matches for managed security service providers (mssp) suppliers associated with the United States as of October 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?

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

Which city has the most managed security service providers (mssp) suppliers?

New York leads with 159 company records, followed by Austin (88) and Houston (83).

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 64,177 professional contacts with verified work emails tracked across these 4,941 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 October 19, 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.