Company lists · Data refreshed November 2026

Top 25 Managed network security services based in the United States

RevenueBase identified 715 company matches for managed network security services associated with the United States as of November 2026 and tracks 18,065 professional contacts across them, including 7,127 with verified work emails. New York is the largest hub.

This list covers company matches for managed network security services 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 November 5, 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 Nov 5, 2026 How this list was built
715Companies
18,065Contacts tracked
7,127Verified emails
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The 25 largest managed network security services based in the United States

Ranked by team size
Top 25 of 715 company matches for managed network security services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSanta Clara, CA, United StatesHQ recorded Nov 5, 20261,001-5,0003,307 contacts →

Exact match

“Infoblox unites networking and security to deliver unmatched performance and protection.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchEl Paso, TX, United StatesHQ recorded Nov 5, 2026501-1,0001,346 contacts →

Exact match

“Today fast, flexible networks are the foundation of every successful organization.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchColumbia, MD, United StatesHQ recorded Nov 5, 2026501-1,000831 contacts →

Exact match

“Protect Your Endpoints, Identities, Logs, and Employees.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchSan Jose, CA, United StatesHQ recorded Nov 5, 2026201-500772 contacts →

Exact match

“Nile is a pioneer and leader in Secure Networking-as-a-Service (NaaS).”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchGreenwood Village, CO, United StatesHQ recorded Nov 5, 2026501-1,000722 contacts →

Exact match

“NTT Global Networks is a leading managed network services provider and a business unit of NTT Group.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchMclean, AZ, United StatesHQ recorded Nov 5, 2026501-1,000623 contacts →

Exact match

“UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Nov 5, 2026501-1,000476 contacts →

Exact match

“If you’re a midsize enterprise with employees (i.e, an “MSE” according to Gartner), we know what you’re going through.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchLas Vegas, NV, United StatesHQ recorded Nov 5, 2026201-500372 contacts →

Exact match

“Intelligent Technical Solutions (ITS) is a Managed Security Service Provider (MSSP) helping growing and mid-market organizations improve IT performance, strengthen cybersecurity…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchLenexa, KS, United StatesHQ recorded Nov 5, 2026201-500270 contacts →

Exact match

“FireMon is the founder of Network Security Policy Management (NSPM) and serves as the control plane for security policy across modern enterprise networks.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchMiami, FL, United StatesHQ recorded Nov 5, 2026201-500263 contacts →

Exact match

“We are Cipher, a company from the Prosegur group specializing in Cybersecurity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchCovina, CA, United StatesHQ recorded Nov 5, 2026201-500257 contacts →

Exact match

“CUJO AI® is the global leader of cutting-edge cybersecurity and network intelligence solutions that enable network operators globally to improve the digital life protection of…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchCharlotte, NC, United StatesHQ recorded Nov 5, 2026201-500256 contacts →

Exact match

“GLS is a managed network and security services provider founded in 1998.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchEllicott City, MD, United StatesHQ recorded Nov 5, 202651-200209 contacts →

Exact match

“Blackpoint Cyber is a technology-driven cybersecurity company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Nov 5, 2026201-500206 contacts →

Exact match

“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchIrvine, CA, United StatesHQ recorded Nov 5, 202651-200192 contacts →

Exact match

“Proficio is a world-class Managed Security Service Provider (MSSP) providing managed detection and response solutions, 24×7 security monitoring and advanced data breach prevention…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchNorthwood, OH, United StatesHQ recorded Nov 5, 2026201-500186 contacts →

Exact match

“For over 30 years, Telesystem has been a trusted technology partner for businesses across the country, delivering Managed Security, Networking, and Communication solutions backed…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchElmhurst, IL, United StatesHQ recorded Nov 5, 202651-200170 contacts →

Exact match

“DefendEdge is a leading US-based cybersecurity firm specializing in protecting clients' firewalls, endpoints, and applications against cyber threats and vulnerabilities.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchPlano, TX, United StatesHQ recorded Nov 5, 202651-200169 contacts →

Exact match

“Armor is a global leader in cloud-native managed detection and response.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBoca Raton, FL, United StatesHQ recorded Nov 5, 2026201-500159 contacts →

Exact match

“As a Managed Network and Technology Solutions Provider since 1994, BCN delivers customized solutions that fuel growth, enhance security, and simplify complexity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchNew York, NY, United StatesHQ recorded Nov 5, 2026501-1,000157 contacts →

Exact match

“Stroz Friedberg is now LevelBlue, the world's largest pure-play Managed Security Services Provider (MSSP).”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchHuntsville, AL, United StatesHQ recorded Nov 5, 2026n/a154 contacts →

Exact match

“HiWAAY's Network Services specializes in network design, business process analysis, information security and managed IT services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchCincinnati, OH, United StatesHQ recorded Nov 5, 202651-200150 contacts →

Exact match

“Cadre is a network and information security solutions provider that serves large and medium-sized firms.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchBroomfield, CO, United StatesHQ recorded Nov 5, 202651-200145 contacts →

Exact match

“eSoft is a leader in providing Simply Better Network Security™ to businesses of nearly any size.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchAlpharetta, GA, United StatesHQ recorded Nov 5, 20261,001-5,000112 contacts →

Exact match

“With over 25 years of expertise, PDI Security and Network Solutions (formerly known as Nuspire) is redefining cybersecurity and network management through intelligent unification…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchLafayette, CA, United StatesHQ recorded Nov 5, 202651-200107 contacts →

Exact match

“Xantrion is a dedicated cybersecurity and IT partner that proactively protects the business you have built and strengthens your IT infrastructure as you grow.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 715 managed network security services based in the United States

See the full list, filter by size, metro and specialty, and access 7,127 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Managed network security services based in the United States at a glance

As of Nov 5, 2026
39.5%Verified-email coverage
25.3Average contacts per company
1-10Median size (employees)
2.8%Largest-city concentration · New York
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
382
11-50
234
51-200
67
201-500
15
501-1,000
9
1,001-5,000
5
10001+
1

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 715 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 network security services” 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 7,127 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 November 5, 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.

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 network security services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many managed network security services are there based in the United States?

RevenueBase identified 715 company matches for managed network security services associated with the United States as of November 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?

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

Which city has the most managed network security services?

New York leads with 20 company records, followed by Houston (16) and Austin (15).

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 7,127 professional contacts with verified work emails tracked across these 715 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 November 5, 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.