Company lists · Data refreshed September 2026
Top 25 Alarm monitoring services worldwide
RevenueBase identified 6,797 alarm monitoring services worldwide as of September 2026 and tracks 95,319 professional contacts across them, including 15,557 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers alarm monitoring services worldwide, 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 September 19, 2026. Country and city lists for alarm monitoring services follow the table.
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.
The 25 largest alarm monitoring services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 14,199 contacts → | ||||
Indirect evidence “Verisure is the global leader in professionally monitored security services by customers served, with a market-leading presence across Europe and Latin America.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,126 contacts → | ||||
Indirect evidence “Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,045 contacts → | ||||
Indirect evidence “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,287 contacts → | ||||
Indirect evidence “Vector Security® has protected people and property by providing intelligent security solutions tailored to the needs of the customer for more than 50 years.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,276 contacts → | ||||
Indirect evidence “Established in Safe Haven Security has grown to become the nation’s largest ADT-authorized dealer, trusted by homeowners and businesses across the country.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,253 contacts → | ||||
Indirect evidence “Being safe should be simple.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 953 contacts → | ||||
Partial evidence “Sector Alarm er en av Europas ledende leverandører av sikkerhet, og har mer enn 650 fornøyde og trygge kunder i Europa.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 885 contacts → | ||||
Indirect evidence “DEFENDERS is a leader in the home security industry, providing safety and peace of mind to more than 1.5 million families nationwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 839 contacts → | ||||
Indirect evidence “Securitas knows Security.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 799 contacts → | ||||
Indirect evidence “ADT Commercial, LLC was acquired by GTCR and is now Everon, LLC.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 763 contacts → | ||||
Indirect evidence “For more than 30 years, CPI Security has been a leader in customized home and business security and home automation services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 677 contacts → | ||||
Indirect evidence “Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 659 contacts → | ||||
Indirect evidence “comienzos de 1989 se funda SABICO SEGURIDAD S.A, estando inscrita en el Registro de Empresas de Seguridad con el nº 1731.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 596 contacts → | ||||
Partial evidence “We are Canada's complete fire alarm and suppression, signalling, nurse call, communications, security and energy saving solutions provider As one of Canada’s leading life safety…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 572 contacts → | ||||
Indirect evidence “Alert 360 security is a trusted and best-in-class provider of reliable security solutions for homes and businesses.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 542 contacts → | ||||
Partial evidence “Securiton AG has been a leading manufacturer and installer of alarm and security systems since 1948 and is part of the Swiss Securitas Group.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 542 contacts → | ||||
Indirect evidence “KingAlarm Systems began operations in March and, in a relatively short time, has become the largest Electronic Security Company not just in Jamaica but the entire Caribbean…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 490 contacts → | ||||
Partial evidence “Rapid Response Monitoring is a leading provider of professional monitoring services founded in 1992.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 446 contacts → | ||||
Indirect evidence “A Inviolável atua no mercado há mais de 25 anos.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 389 contacts → | ||||
Partial evidence “Guardian Alarm is one of the largest independently-owned security companies protecting both homes and businesses throughout the Midwest.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 375 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 356 contacts → | ||||
Partial evidence “Spécialiste de la télésurveillance, des systèmes d’alarmes et de la téléassistance depuis près de 40 ans, Nexecur s'engage pour votre sécurité en s'appuyant sur l'expérience et la…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 356 contacts → | ||||
Indirect evidence “At ADT by TELUS, helping to protect our customers has been our sole mission for over 125 years.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 339 contacts → | ||||
Partial evidence “As the nation's leading medical device service and monitoring company, we are committed to improving the standard of independent living and promote healthy aging through our…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 337 contacts → | ||||
Partial evidence “Sector Alarm es uno de los principales proveedores de seguridad de Europa con más de clientes satisfechos y seguros.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: alarm monitoring services. 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 alarm monitoring services.
- Partial evidence
- Its own public description names part of alarm monitoring services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name alarm monitoring services. 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 6,797 alarm monitoring services worldwide
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Alarm monitoring services worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 alarm monitoring services, 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.
- Coverage
- Every country. Country and city lists for alarm monitoring services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “alarm monitoring services”. 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 alarm monitoring services), 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 alarm monitoring services, and records with no verified work email.
- 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, 15,557 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 September 19, 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.
Alarm monitoring services by location
19 lists · largest firstEvery Alarm monitoring services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Alarm monitoring services based in the United States2,014
- Alarm monitoring services based in the United Kingdom654
- Alarm monitoring services based in Brazil528
- Alarm monitoring services based in France358
- Alarm monitoring services based in Canada300
- Alarm monitoring services based in Germany206
- Alarm monitoring services based in the Netherlands157
- Alarm monitoring services based in Australia156
- Alarm monitoring services based in Italy145
- Alarm monitoring services based in Spain140
- Alarm monitoring services based in Argentina107
- Alarm monitoring services based in Belgium102
- Alarm monitoring services based in Sweden64
- Alarm monitoring services based in South Africa50
- Alarm monitoring services based in Switzerland48
- Alarm monitoring services based in Ireland46
- Alarm monitoring services based in Denmark39
- Alarm monitoring services based in New Zealand38
- Alarm monitoring services based in Portugal29
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 alarm monitoring services, 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 alarm monitoring services are there worldwide?
RevenueBase identified 6,797 alarm monitoring services worldwide as of September 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?
Verisure, headquartered in Worldwide, tops this list with the largest team on record.
Which country has the most alarm monitoring services?
The United States leads with 2,014 companies, followed by the United Kingdom (654) and Brazil (528). Every alarm monitoring services list by country and city is linked on this page.
Which city has the most alarm monitoring services?
Sao Paulo leads with 78 headquartered companies, followed by London (61) and Houston (30).
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 15,557 verified decision-maker contacts tracked across these 6,797 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 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 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.