Company lists · Data refreshed September 2026

Top 25 Monitoring firms based in the United States

RevenueBase identified 185 company matches for monitoring firms associated with the United States as of September 2026 and tracks 3,357 professional contacts across them, including 1,230 with verified work emails. New York is the largest hub.

This list covers company matches for monitoring firms 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 September 21, 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 Sep 21, 2026 How this list was built
185Companies
3,357Contacts tracked
1,230Verified emails
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The 25 largest monitoring firms based in the United States

Ranked by team size
Top 25 of 185 company matches for monitoring firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchSan Antonio, TX, United StatesHQ recorded Sep 21, 2026201-500702 contacts →

Exact match

“Pro-Vigil is the smartest, fastest, most reliable, surveillance and monitoring solution, to enable you to focus on your core business, whether that’s in construction, an auto…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchSyracuse, NY, United StatesHQ recorded Sep 21, 2026501-1,000490 contacts →

Exact match

“Rapid Response Monitoring is a leading provider of professional monitoring services founded in 1992.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchOgden, UT, United StatesHQ recorded Sep 21, 2026201-500375 contacts →

Exact match

“As the premier provider of critical event monitoring across North America, Becklar Monitoring is prepared to monitor any event, anytime, with speed, accuracy and exceptional…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-200110 contacts →

Exact match

“For over 40 years, DFP Partners has been a committed ally to Broker-Dealers, Registered Investment Advisers, and other financial services firms looking for accounting and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchWillmar, MN, United StatesHQ recorded Sep 21, 202651-200103 contacts →

Exact match

“Christianson PLLP is a Certified Public Accounting Firm who is dedicated to providing solutions to our clients needs.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchLongwood, FL, United StatesHQ recorded Sep 21, 2026201-50094 contacts →

Exact match

“CMS is the most trusted wholesale monitoring service provider in the country and has more than 30 years experience in the alarm monitoring industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchAustin, TX, United StatesHQ recorded Sep 21, 202651-20086 contacts →

Exact match

“Eventus provides state-of-the-art, at-scale trade surveillance software across all lines of defense.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchStatesville, NC, United StatesHQ recorded Sep 21, 2026201-50080 contacts →

Exact match

“Security Central serves customers nationwide with Boutique Monitoring Services that are professional, responsive and innovative.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchIrving, TX, United StatesHQ recorded Sep 21, 202651-20075 contacts →

Exact match

“NMC has risen to become the premier 3rd party monitoring center in the nation.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchOmaha, NE, United StatesHQ recorded Sep 21, 202651-20056 contacts →

Exact match

“Strong Technical Services (STS) is a 24x7x365 remote monitoring company with two geographically dispersed state-of-the-art network operation centers (NOCs) and a nationwide field…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchBoston, MA, United StatesHQ recorded Sep 21, 202611-5046 contacts →

Exact match

“Started in 2004, Affiliated Monitors was the first company in the United States to focus on providing top-quality, independent integrity monitoring services across a wide range of…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchPort Chester, United StatesHQ recorded Sep 21, 202651-20038 contacts →

Exact match

“MISSION STATEMENT As we navigate an ever evolving landscape of modern technology, USA Central Station is committed to providing world class monitoring services for our dealers and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchZionsville, IN, United StatesHQ recorded Sep 21, 202611-5035 contacts →

Exact match

“FCC performs superior assessment and reporting for construction monitoring and inspections located across the US.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Sep 21, 2026201-50033 contacts →

Exact match

“Corvil is the leader in performance monitoring and analytics for electronic financial markets.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchBryan, TX, United StatesHQ recorded Sep 21, 202611-5033 contacts →

Exact match

“Telemonitoring involves remotely monitoring patients who are not at the same location as the health care provider.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchStatesboro, GA, United StatesHQ recorded Sep 21, 202611-5032 contacts →

Exact match

“Located in Statesboro, Georgia, Steve H.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchRichland, WA, United StatesHQ recorded Sep 21, 202611-5031 contacts →

Exact match

“Sealaska Technical Services (STS) focuses on the use of innovative remote monitoring technologies to collect and connect data sets for our clients with monitoring needs, whether…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchOmaha, NE, United StatesHQ recorded Sep 21, 202611-5027 contacts →

Exact match

“EGiS is a derivative of the Greek word Aegis, it means “under the protection of”.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchNewport Beach, CA, United StatesHQ recorded Sep 21, 202651-20025 contacts →

Exact match

“FundingShield provides the residential mortgage industry's highest level of protection in the funding process to close newly origination mortgage loans.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchDeerfield Beach, FL, United StatesHQ recorded Sep 21, 202611-5023 contacts →

Exact match

“Renaissance Regulatory Services (RRS) is a privately held boutique consulting firm based in Deerfield Beach, Florida.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchCary, NC, United StatesHQ recorded Sep 21, 202611-5022 contacts →

Exact match

“At iGLASS Networks, we specialize in providing a fully managed Network Monitoring Service that ensures your IT infrastructure is monitored 24/7.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202611-5021 contacts →

Exact match

“ACI is the leading provider of FinOp and regulatory reporting services for U.S.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchEverett, WA, United StatesHQ recorded Sep 21, 202611-5020 contacts →

Exact match

“Evergreen Security, Inc.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchAustin, TX, United StatesHQ recorded Sep 21, 202611-5019 contacts →

Exact match

“Recon offers the best Managed Security Operations on the planet.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchAlpharetta, GA, United StatesHQ recorded Sep 21, 202611-5019 contacts →

Exact match

“Archive Intel is revolutionizing regulatory compliance for financial advisors and institutions with its AI-powered monitoring, archiving, and compliance solution.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 185 monitoring firms based in the United States

See the full list, filter by size, metro and specialty, and access 1,230 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Monitoring firms based in the United States at a glance

As of Sep 21, 2026
36.6%Verified-email coverage
18.1Average contacts per company
11-50Median size (employees)
9.2%Largest-city concentration · New York
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
84
11-50
70
51-200
22
201-500
6
501-1,000
2

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 185 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 “monitoring firms” 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 1,230 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 September 21, 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 “monitoring firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many monitoring firms are there based in the United States?

RevenueBase identified 185 company matches for monitoring firms associated with the United States as of September 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?

Pro-Vigil Surveillance Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most monitoring firms?

New York leads with 17 company records, followed by Dallas (5) and Austin (4).

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 1,230 professional contacts with verified work emails tracked across these 185 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 September 21, 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.