Company lists · Data refreshed September 2026

Top 25 Colocation facility security services based in the United States

RevenueBase identified 576 colocation facility security services headquartered in the United States as of September 2026 and tracks 19,378 professional contacts across them, including 3,797 with verified work emails. Dallas is the largest hub.

This list covers colocation facility security services headquartered in the United States, 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 27, 2026.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
576Companies
19,378Contacts tracked
3,797Verified emails
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The 25 largest colocation facility security services based in the United States

Ranked by team size
Top 25 of 576 colocation facility security services based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to colocation facility security services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceIrving, TX, United StatesHQ checked Sep 27, 20261,001-5,0002,045 contacts →

Partial 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 27, 2026
2Partial evidenceNew Orleans, LA, United StatesHQ checked Sep 27, 20261,001-5,0001,399 contacts →

Partial evidence

“Weiser Security Services is the 11th largest security service provider in the U.S.”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceChicago, IL, United StatesHQ checked Sep 27, 20261,001-5,0001,138 contacts →

Partial evidence

“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 27, 20265,001-10,0001,062 contacts →

Indirect evidence

“Founded in 1982, St.”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidencePhoenix, AZ, United StatesHQ checked Sep 27, 2026201-500849 contacts →

Indirect evidence

“IO is now Iron Mountain.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 2026501-1,000519 contacts →

Partial evidence

“Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.”

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidenceSouthfield, MI, United StatesHQ checked Sep 27, 2026501-1,000389 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 27, 2026
8Partial evidenceGrand Rapids, MI, United StatesHQ checked Sep 27, 2026201-500334 contacts →

Partial evidence

“US Signal is a provider of data center services, offering connectivity, cloud hosting, colocation, data protection, and disaster recovery solutions – all powered by its wholly…”

Source: RevenueBase Database · checked Sep 27, 2026
9Indirect evidenceSyosset, NY, United StatesHQ checked Sep 27, 2026201-500302 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
10Partial evidenceRockville Centre, NY, United StatesHQ checked Sep 27, 20261,001-5,000275 contacts →

Partial evidence

“Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.”

Source: RevenueBase Database · checked Sep 27, 2026
11Indirect evidenceEnglewood, CO, United StatesHQ checked Sep 27, 202651-200255 contacts →

Indirect evidence

“H5 Data Centers is one of the leading private data center owner and operators in the United States with over 4 million square feet nationally.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceCoppell, TX, United StatesHQ checked Sep 27, 2026501-1,000238 contacts →

Partial evidence

“Headquartered in Dallas, Centersquare (formerly Evoque+Cyxtera) specializes in delivering a comprehensive suite of colocation and data center services.”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceMadison, WI, United StatesHQ checked Sep 27, 2026501-1,000235 contacts →

Indirect evidence

“OneNeck is now US Signal.”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceAurora, IL, United StatesHQ checked Sep 27, 2026201-500225 contacts →

Indirect evidence

“Family owned and operated since 1968, Alarm Detection Systems, Inc.(ADS) understands that nothing is more important than the safety of your family and the protection of your…”

Source: RevenueBase Database · checked Sep 27, 2026
15Partial evidenceN. Little Rock, AR, United StatesHQ checked Sep 27, 2026501-1,000208 contacts →

Partial evidence

“Central Defense Security officers protect the human, intellectual and physical assets of our customers and their visitors.”

Source: RevenueBase Database · checked Sep 27, 2026
16Partial evidenceBethesda, MD, United StatesHQ checked Sep 27, 2026201-500206 contacts →

Partial evidence

“An industry leader in managed access control security solutions and services since 1981, Datawatch Systems is trusted by building owners, property managers, and tenants across the…”

Source: RevenueBase Database · checked Sep 27, 2026
17Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 2026201-500206 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
18Indirect evidenceDes Plaines, IL, United StatesHQ checked Sep 27, 20261,001-5,000203 contacts →

Indirect evidence

“As the U.S.”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceChantilly, VA, United StatesHQ checked Sep 27, 202651-200195 contacts →

Partial evidence

“Compu Dynamics, since 1982, has been the go-to data center and facility management experts in Maryland, Virginia, and Washington, DC with teams of in-house, factory-trained, and…”

Source: RevenueBase Database · checked Sep 27, 2026
20Partial evidenceCincinnati, OH, United StatesHQ checked Sep 27, 2026201-500165 contacts →

Partial evidence

“Security Guard and Technology Services.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceArlington, MA, United StatesHQ checked Sep 27, 2026201-500159 contacts →

Indirect evidence

“We are in the business of protecting people's lives and property, so we understand our customers want and need access to American Alarm's talent and technology around the clock.”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceOmaha, NE, United StatesHQ checked Sep 27, 202651-200157 contacts →

Partial evidence

“Security Equipment’s primary concern is for our client’s life safety and peace of mind.”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceHammond, LA, United StatesHQ checked Sep 27, 2026n/a156 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
24Partial evidenceBurnsville, MN, United StatesHQ checked Sep 27, 20261,001-5,000143 contacts →

Partial evidence

“For almost 40 years, VTI has been called upon and recognized by our industry for a full range of advanced physical security technologies.”

Source: RevenueBase Database · checked Sep 27, 2026
25Partial evidenceAustin, United StatesHQ checked Sep 27, 2026201-500138 contacts →

Partial evidence

“Priebe Security Services, known and respected for nearly two decades, has been providing personalized, client centric professional security services for most of Austin’s most…”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 576 colocation facility security services based in the United States

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Colocation facility security services based in the United States at a glance

As of Sep 27, 2026
19.6%Verified-email coverage
33.6Average contacts per company
11-50Median size (employees)
3.1%Largest-city concentration · Dallas
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
189
11-50
220
51-200
95
201-500
34
501-1,000
23
1,001-5,000
13
5,001-10,000
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 576 companies.

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 colocation facility security 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.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “colocation facility security 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 colocation facility security 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 colocation facility security services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 3,797 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 27, 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.

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 colocation facility security 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 colocation facility security services are there based in the United States?

RevenueBase identified 576 colocation facility security services headquartered in the United States 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?

Everon, headquartered in Irving, tops this list with the largest team on record.

Which city has the most colocation facility security services?

Dallas leads with 18 headquartered companies, followed by New York (17) and Los Angeles (14).

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 3,797 verified decision-maker contacts tracked across these 576 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 27, 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.