Company lists · Data refreshed November 2026

Top 25 Emergency notification system companies based in the United States

RevenueBase identified 208 company matches for emergency notification system companies associated with the United States as of November 2026 and tracks 5,388 professional contacts across them, including 2,140 with verified work emails. New York is the largest hub.

This list covers company matches for emergency notification system companies 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 6, 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 6, 2026 How this list was built
208Companies
5,388Contacts tracked
2,140Verified emails
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The 25 largest emergency notification system companies based in the United States

Ranked by team size
Top 25 of 208 company matches for emergency notification system companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchChester, CT, United StatesHQ recorded Nov 6, 20261,001-5,000811 contacts →

Exact match

“Whelen Engineering is a family-owned company with a pioneering spirit and a passion to protect the lives of those who protect and serve others.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLongmont, CO, United StatesHQ recorded Nov 6, 20261,001-5,000381 contacts →

Exact match

“Intrado, formerly West, is an innovative, cloud-based, global technology partner to clients around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchRedmond, WA, United StatesHQ recorded Nov 6, 2026201-500369 contacts →

Exact match

“With more than 80 years of experience, Zetron is a critical communications technology company, providing integrated solutions with legendary reliability and support.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 202651-200298 contacts →

Exact match

“CENTEGIX is the leader in incident response solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchCoppell, TX, United StatesHQ recorded Nov 6, 2026201-500293 contacts →

Exact match

“Pioneering Life Safety Solutions Since 1989 Kings is a leading authority in emergency communication systems and monitoring services, with over three decades of dedicated…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 2026201-500180 contacts →

Exact match

“Genasys is the global leader in Protective Communications Solutions that ensure private organizations and public safety agencies are “Ready when it matters.” Genasys solutions…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMadison, WI, United StatesHQ recorded Nov 6, 202651-200178 contacts →

Exact match

“Protect.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBaltimore, MD, United StatesHQ recorded Nov 6, 202651-200156 contacts →

Exact match

“Alertus - Redefining Mass Notification for 20+ Years Our Mission is to enable organizations to disseminate information to help protect lives, secure assets, and maintain business…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200147 contacts →

Exact match

“Citizen is the No.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202651-200121 contacts →

Exact match

“Regroup's award-winning, cloud-based mass notification platform is used every day by thousands of organizations to save lives, improve safety for entire communities, respond to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWall Township, NJ, United StatesHQ recorded Nov 6, 202611-5092 contacts →

Exact match

“911inform is the only all-encompassing emergency system that empowers first responders.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchFramingham, MA, United StatesHQ recorded Nov 6, 2026201-50086 contacts →

Exact match

“Rave Mobile Safety was acquired by Motorola Solutions in 2022 and is now part of Motorola Solutions’ ecosystem of safety and security technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchTX, United StatesHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“At NGA, we are on a mission to provide unmatched peace of mind, and equal access for everyone through our cutting-edge NG911 cloud-based emergency telecommunications solution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWallingford, CT, United StatesHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Mutualink is a leading provider of secure, interoperable communications solutions, specializing in automated emergency response technology for public safety, government, critical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“ATI Systems is a leader in the design, manufacturing and installation of world-class reliable emergency warning and mass notification systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLongwood, FL, United StatesHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“Student and staff safety is the top priority at any educational facility.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMountain View, CA, United StatesHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“CrisisGo is the premier safety and incident management platform that aligns communication across and within multiple agencies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNiles, IL, United StatesHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“Jeron Electronic Systems, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSonora, CA, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Front Porch solutions lower costs and increases revenue for service providers like Comcast and Time Warner Cable.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPhilomath, OR, United StatesHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Active911 is a respected leader in software solutions for emergency response.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNewport Beach, CA, United StatesHQ recorded Nov 6, 202651-20032 contacts →

Exact match

“A comprehensive multi-patented emergency alert system & mass notification system, suitable for businesses, governments and schools.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHolland, MI, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Safety has always been the No.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Founded in 2013, React Mobile is a global leader in safety and workplace communication.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMilwaukee, WI, United StatesHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“American Signal Corporation (ASC) is an American manufacturer of mass notification, disaster warning, and emergency notification systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchFort Worth, TX, United StatesHQ recorded Nov 6, 202651-20027 contacts →

Exact match

“Communication Concepts has been building relationships by helping people with Technology, Emergency Communication, and Security needs since 1987.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 208 emergency notification system companies based in the United States

See the full list, filter by size, metro and specialty, and access 2,140 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Emergency notification system companies based in the United States at a glance

As of Nov 6, 2026
39.7%Verified-email coverage
25.9Average contacts per company
11-50Median size (employees)
4.3%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
72
11-50
99
51-200
27
201-500
7
1,001-5,000
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 208 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 “emergency notification system companies” 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 2,140 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 6, 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 “emergency notification system companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many emergency notification system companies are there based in the United States?

RevenueBase identified 208 company matches for emergency notification system companies 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?

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

Which city has the most emergency notification system companies?

New York leads with 9 company records, followed by Chicago (5) and Dallas (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 2,140 professional contacts with verified work emails tracked across these 208 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 6, 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.