Company lists · Data refreshed November 2026

Top 22 Telecommunications infrastructure security companies based in Germany

RevenueBase identified 545 company matches for telecommunications infrastructure security companies associated with Germany as of November 2026 and tracks 8,631 professional contacts across them, including 2,847 with verified work emails. Berlin is the largest hub.

This list covers company matches for telecommunications infrastructure security companies associated with Germany, 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 5, 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 5, 2026 How this list was built
545Companies
8,631Contacts tracked
2,847Verified emails
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The 22 largest telecommunications infrastructure security companies based in Germany

Ranked by team size
Top 22 of 545 company matches for telecommunications infrastructure security companies based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchEssen, GermanyHQ recorded Nov 5, 20261,001-5,000680 contacts →

Exact match

“secunet – We are the Guardians of Europe's Digital Freedom.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchErlensee (hessen), GermanyHQ recorded Nov 5, 20261,001-5,000409 contacts →

Exact match

“Täglich verlassen sich unsere Kunden auf unsere hochwertigen Dienstleistungen in den Bereichen Sicherheit, Prävention und Service.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchBochum, GermanyHQ recorded Nov 5, 2026501-1,000392 contacts →

Exact match

“Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchBonn, GermanyHQ recorded Nov 5, 20261,001-5,000379 contacts →

Exact match

“Wir glauben an eine sichere digitale Zukunft mit minimalen Risiken und maximalen Chancen.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchCologne, GermanyHQ recorded Nov 5, 2026201-500257 contacts →

Exact match

“Die Plusnet GmbH, eine Tochtergesellschaft der EnBW, ist ein deutsches Telekommunikationsunternehmen mit Fokus auf Geschäftskunden.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchBonn, GermanyHQ recorded Nov 5, 2026201-500149 contacts →

Exact match

“ITENOS, headquartered in Bonn, Germany, is an experienced specialist for secure IT and telecommunications solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchNeu-isenburg, GermanyHQ recorded Nov 5, 202651-200134 contacts →

Exact match

“Die usd AG schützt Unternehmen vor Hackern und Kriminellen.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchBergisch Gladbach, GermanyHQ recorded Nov 5, 20261,001-5,000100 contacts →

Exact match

“WER WIR SIND Die Circet Deutschland SE ist ein Unternehmen der Circet Group, dem führenden weltweiten Dienstleister für den Aufbau und die Wartung von…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchMunich, GermanyHQ recorded Nov 5, 2026201-50094 contacts →

Exact match

“Rohde & Schwarz Cybersecurity is a leading IT security company that protects companies and public institutions around the world against cyberattacks.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchBerlin, GermanyHQ recorded Nov 5, 202651-20093 contacts →

Exact match

“Exclusive Networks ist ein globaler Cybersecurity- und Netzwerk-Spezialist, der Partnern und Endkunden über bewährte Vertriebswege und auf der Grundlage des technischen Know-hows…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchMunich, GermanyHQ recorded Nov 5, 2026201-50092 contacts →

Exact match

“aconnic has emerged from the UET Group and its operating companies and brands including albis-elcon, SUCONI, Albis Engineering and Albis Technologies.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchWuppertal, GermanyHQ recorded Nov 5, 202651-20084 contacts →

Exact match

“r-tec IT Security ist seit über 25 Jahren auf IT-Sicherheit spezialisiert.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchMunich, GermanyHQ recorded Nov 5, 202651-20073 contacts →

Exact match

“PASM - Power and Air Condition Solution Management GmbH gewährleistet die Verfügbarkeit kritischer Infrastrukturanlagen aus dem Sektor Informationstechnik und Telekommunikation…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLangenfeld (rheinland), GermanyHQ recorded Nov 5, 202651-20073 contacts →

Exact match

“We, mispa Technologies GmbH, a leading IT security and service provider, deliver consulting, design and managed services to help our customers get the most out of their IT…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchDüsseldorf, GermanyHQ recorded Nov 5, 2026501-1,00072 contacts →

Exact match

“We deliver advanced IT, Cybersecurity, AI, and Telecommunications solutions for enterprises, operators, and governments worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchUlm, GermanyHQ recorded Nov 5, 202651-20071 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchJüterbog, GermanyHQ recorded Nov 5, 202611-5065 contacts →

Exact match

“Securitas GmbH Sicherheitsdienste is a security and investigations company based out of Am Heideland 2, Jüterbog, Jüterbog, Germany.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchNuremberg, GermanyHQ recorded Nov 5, 20261,001-5,00065 contacts →

Exact match

“Seit 1902 steht die inhabergeführte Nürnberger Wach- und Schließgesellschaft für Sicherheit mit Qualität.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBerlin, GermanyHQ recorded Nov 5, 202651-20055 contacts →

Exact match

“Adva Network Security is a leading German IT-security company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchKaltenkirchen, GermanyHQ recorded Nov 5, 20261,001-5,00052 contacts →

Exact match

“Our company Pütz Security AG was founded in 1987 by Thomas Pütz and since then we have been providing services in various areas such as event protection, property protection…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchPotsdam, GermanyHQ recorded Nov 5, 202651-20051 contacts →

Exact match

“Systema Datentechnik ist ein führender IT-Dienstleister mit Spezialisierung auf IT-Service Management (ITSM), IT-Security und Managed Services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchBerlin, GermanyHQ recorded Nov 5, 20261,001-5,00046 contacts →

Exact match

“CIBORIUS SECURITY – IHR PARTNER FÜR INTEGRIERTE SICHERHEITSLÖSUNGEN Seit 2006 steht die inhabergeführte CIBORIUS Gruppe für maßgeschneiderte Sicherheits- und…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 22 of 545 telecommunications infrastructure security companies based in Germany

See the full list, filter by size, metro and specialty, and access 2,847 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecommunications infrastructure security companies based in Germany at a glance

As of Nov 5, 2026
33.0%Verified-email coverage
15.8Average contacts per company
11-50Median size (employees)
7.3%Largest-city concentration · Berlin
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
226
11-50
168
51-200
75
201-500
26
501-1,000
11
1,001-5,000
13
5,001-10,000
1
10001+
1

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 545 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 Germany whose business descriptions match “telecommunications infrastructure 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 2,847 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 5, 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.

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

How many telecommunications infrastructure security companies are there based in Germany?

RevenueBase identified 545 company matches for telecommunications infrastructure security companies associated with Germany 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?

Secunet Security Networks AG tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telecommunications infrastructure security companies?

Berlin leads with 40 company records, followed by Munich (24) and Cologne (18).

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 2,847 professional contacts with verified work emails tracked across these 545 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 5, 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.