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Companies using Checkmk

As of 14 October 2026, Firmable tracks 1,016 companies across 13 countries running Checkmk. See who they are, and who to call.

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Technologies tracked, each matched to the companies running them and who to call.

Companies using Checkmk

Showing 5 of 1K+ companies

May Mobility

maymobility.com · Automotive manufacturing · 251–500 employees

Last seen 12 Oct 2026 The most recent date Firmable detected Checkmk at this company.

Decision makers · 103 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Vice President, Vehicle Platform Engineering MobileEmail
Sr. Vice President of Autonomy MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

May Mobility, Inc. had valuation of $1.4B on Sep 18th '26. · 18 Sep 2026

May Mobility, Inc. launched public rides on autonomous e-Palette on Sep 3rd '26. · 3 Sep 2026

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123NET

123.net · Telecommunications services · 251–500 employees

Last seen 30 Sep 2026 The most recent date Firmable detected Checkmk at this company.

Decision makers · 73 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

CTIO MobileEmail
Executive Vice President of Technology MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

Hired as Senior Vice President of People and Culture · 6 Oct 2026

123NET announced that the Ottawa County Wide Broadband Project has reached over 80% completion with 260 miles of fiber constructed. · 13 Oct 2026

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Netcraft

netcraft.com · Cybersecurity · 251–500 employees

Last seen 30 Sep 2026 The most recent date Firmable detected Checkmk at this company.

Decision makers · 43 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Director of Solutions Engineering - AMER & APAC MobileEmail
VP APAC Co-ordination and Director of Engineering MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

Hired as board of directors · 25 Aug 2026

Hiring: Corporate Account Manager (US) · 6 Oct 2026

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The Voleon Group

voleon.com · Accounting and auditing services · 251–500 employees

Last seen 17 Aug 2026 The most recent date Firmable detected Checkmk at this company.

Decision makers · 93 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Head of Feature Engineering MobileEmail
Director of DevOps MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

Hired as Lead Quant Trading Strategist · 11 Aug 2026

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Iq Fiber

iqfiber.com · Internet services and web portals · 51–250 employees

Last seen 16 Aug 2026 The most recent date Firmable detected Checkmk at this company.

Decision makers · 55 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Vice President of OSP & Engineering MobileEmail
Director of OSP Engineering MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

IQ Fiber invested into assets: network assets in the amount of $35M in Orangeburg, South Carolina, United States, Northern America, Americas on Sep 14th '26. · 14 Sep 2026

Hiring: Manager, Network Engineering · 7 Oct 2026

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Who uses Checkmk

A breakdown of the 1K+ companies running Checkmk.

Top industries

Information technology and services331
Professional and business services99
Industrial and manufacturing98
Media and telecommunications83
Financial services82
Education and training52
Art, sports and recreation36
Construction and building33

No industry recorded: 64

Company size

1–1059 (7%)
11–50121 (15%)
51–250183 (22%)
251–50080 (10%)
501–1,00068 (8%)
1,001–5,000150 (18%)
5,001–10,00052 (6%)
10,001+110 (13%)

Share of companies with a recorded size, by employees.

No size recorded: 193

Versions detected

10 versions across the confirmed companies. Counts are distinct companies seen running that version.

1.2.6b512
2.0.0p205
2.4.0p55
1.2.6p123
1.6.0p113
1.6.0p273
2.0.0p93
1.1.32
1.6.0p302
1.6.0p62

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Frequently asked questions

About the Checkmk data on this page.

How many companies use Checkmk?

Firmable holds confirmed Checkmk detections for 1,016 distinct companies, 540 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.

Which companies use Checkmk?

May Mobility, The Voleon Group and 123NET are among the most prominent in the current set.

What industries use Checkmk?

Information technology and services, professional and business services and industrial and manufacturing lead the set, across 18 industries in total.

What size companies use Checkmk?

Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.

Where are Checkmk users based?

The United States, Australia, Canada and Singapore account for most detections, across 13 countries.

How current is this data?

540 companies were confirmed in the last 90 days. Last detection 14 October 2026.

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