Company lists · Data refreshed November 2026

Top 25 IT infrastructure and security companies based in Luxembourg

RevenueBase identified 83 company matches for IT infrastructure and security companies associated with Luxembourg as of November 2026 and tracks 497 professional contacts across them, including 203 with verified work emails. Luxembourg is the largest hub.

This list covers company matches for IT infrastructure and security companies associated with Luxembourg, 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
83Companies
497Contacts tracked
203Verified emails
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The 25 largest IT infrastructure and security companies based in Luxembourg

Ranked by team size
Top 25 of 83 company matches for IT infrastructure and security companies based in Luxembourg, 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 matchLeudelange, LuxembourgHQ recorded Nov 6, 202651-20037 contacts →

Exact match

“Simac PSF – Your Trusted IT Partner in Luxembourg Simac PSF was established in 1997 in Luxembourg.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPeppange, LuxembourgHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Squaremiled: Your Digital Infrastructure, Simplified and Secured.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWeiswampach, LuxembourgHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Notre équipe de 30 personnes est un mélange dynamique de motivation, d'inventivité et de passion pour les services informatiques et de marketing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchEhlange, LuxembourgHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Empirys is a Luxembourg IT services firm (since 2020) helping SMEs and mid-market companies with managed IT, Microsoft 365/Azure migrations, SOC-managed cybersecurity, NIS2/RGPD…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchContern, LuxembourgHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“dartalis is a regional leader and an independent company focused on information security since 2001.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWindhof, LuxembourgHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“Grâce à ses experts certifiés Microsoft, Elgon vous conseille et vous accompagne dans votre adoption du Cloud, tout en garantissant la pérennité de votre infrastructure et de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLuxembourgHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Cyber Security / Cloud Computing / IT Consulting / Staffing Solutions F3C Systems is specialized in providing, maintaining, and operating secure IT Infrastructure for its…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCapellen, LuxembourgHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Cloud Power Luxembourg -"Your IT Challenges, Our Solutions" We provide the cutting-edge expertise of our teams, modern solutions and the facilities of the Cloud with the aim of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSteinfort, LuxembourgHQ recorded Nov 6, 20261-1014 contacts →

Exact match

“Activities iBO Solutions offers solutions at the crossroad of Business and IT, with appropriate methodologies and tools supporting effective processes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLeudelange, LuxembourgHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Snowball Technology is a cybersecurity consulting firm focused on providing cloud security solutions and services to protect organizations and individuals from cyber threats.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLuxembourgHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Located and active in Luxembourg, but also in the neighbouring countries, ADRONH is a young company of Cyber Security consultants.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchContern, LuxembourgHQ recorded Nov 6, 20261-109 contacts →

Exact match

“We provide independent consulting services in the information security field.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNiederanven, LuxembourgHQ recorded Nov 6, 202611-509 contacts →

Exact match

“itrust consulting has become a recognised and trustworthy actor in the Information Security field in Luxembourg and even throughout Europe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLuxembourgHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Your data must be kept safe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWindhof, LuxembourgHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Convergence IT est une société de services qui regroupe des compétences spécialisées dans le conseil et l’installation de solutions informatiques orientées cloud.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLuxembourgHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Bienvenue sur la page linked In de Ovi Solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMarnach, LuxembourgHQ recorded Nov 6, 20261-107 contacts →

Exact match

“IT-Services & IT-Beratung | Services informatiques & Conseil IT Ihre IT – modern, sicher, effizient.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLeudelange, LuxembourgHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Cybersecurity Consultancy focused on delivering actionable and smart security.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchContern, LuxembourgHQ recorded Nov 6, 20261-106 contacts →

Exact match

“LXCDM est un prestataire de services IT, spécialisé dans le conseil, la vente, l’installation, la maintenance d’infrastructures informatiques et de communication.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPlaten, LuxembourgHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Cartesoft: A team of experts helping you achieve your projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLeudelange, LuxembourgHQ recorded Nov 6, 20261-105 contacts →

Exact match

“M.I.T Sàrl est une société luxembourgeoise crée en 2009, spécialisée dans le service informatique aux entreprises.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDudelange, LuxembourgHQ recorded Nov 6, 20261-104 contacts →

Exact match

“When it comes to IT and Digital Services, you deserve effectiveness and quality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWindhof, LuxembourgHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Mensialis helps SMEs in Luxembourg manage, secure and evolve their IT through a fixed-fee managed services model and a predictable monthly budget agreed upfront.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchHosingen, LuxembourgHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Wir sind ein innovatives Start-Up Unternehmen Mit Tätigkeiten in folgenden Bereichen: • Informatik für sicheres Netzwerk und eine Solide Grundstruktur • Technik für mehr…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLuxembourgHQ recorded Nov 6, 202611-502 contacts →

Exact match

“NPS Consult is a human-sized company that has the ability and flexibility to provide high-quality solutions in a short time frame to organizations.”

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

Showing 25 of 83 IT infrastructure and security companies based in Luxembourg

See the full list, filter by size, metro and specialty, and access 203 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT infrastructure and security companies based in Luxembourg at a glance

As of Nov 6, 2026
40.8%Verified-email coverage
6.0Average contacts per company
1-10Median size (employees)
36.1%Largest-city concentration · Luxembourg
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
55
11-50
19
51-200
8
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Luxembourg, so it is reported there. Company counts and contact totals on this page are exact for Luxembourg, over 83 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 Luxembourg whose business descriptions match “IT infrastructure and security 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 203 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.

IT infrastructure and security companies by metro

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 “IT infrastructure and security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT infrastructure and security companies are there based in Luxembourg?

RevenueBase identified 83 company matches for IT infrastructure and security companies associated with Luxembourg 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?

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

Which city has the most IT infrastructure and security companies?

Luxembourg leads with 30 company records, followed by Leudelange (5) and Windhof (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 203 professional contacts with verified work emails tracked across these 83 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.