Company lists · Data refreshed November 2026

Top 25 Telephony infrastructure providers based in Germany

RevenueBase identified 256 company matches for telephony infrastructure providers associated with Germany as of November 2026 and tracks 2,532 professional contacts across them, including 1,128 with verified work emails. Berlin is the largest hub.

This list covers company matches for telephony infrastructure providers 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 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
256Companies
2,532Contacts tracked
1,128Verified emails
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The 25 largest telephony infrastructure providers based in Germany

Ranked by team size
Top 25 of 256 company matches for telephony infrastructure providers based in Germany, 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 matchCologne, GermanyHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
2Exact matchDüsseldorf, GermanyHQ recorded Nov 6, 2026201-500204 contacts →

Exact match

“Founded in 2004, we at sipgate were the first German VoIP provider and have been developing internet and telephony services ever since.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchEllwangen (jagst), GermanyHQ recorded Nov 6, 2026201-500174 contacts →

Exact match

“Schnelles Internet für die Region #vernetzt - mit Highspeed in Verbindung bleiben Die NetCom BW GmbH mit Sitz in Ellwangen wurde 2014 gegründet und ist eine Konzerngesellschaft…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBergisch Gladbach, GermanyHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
5Exact matchBochum, GermanyHQ recorded Nov 6, 2026201-50067 contacts →

Exact match

“Als eines der führenden Unternehmen in den Bereichen Engineering und Operations sorgen wir bundesweit sowie auch international für funktionierende Infrastrukturen im Festnetz- und…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Easybell ist ein Internet- und Telefonieanbieter mit Sitz im Herzen Berlins.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLüneburg, GermanyHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“Die Lünecom ist ein in der Hansestadt Lüneburg ansässiger Telekommunikationsdienstleister, Netzbetreiber und Internet Service Provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchDortmund, GermanyHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“DOKOM21 ist ein regionaler Telekommunikationsdienstleister mit Sitz in Dortmund.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchKoblenz, GermanyHQ recorded Nov 6, 202651-20038 contacts →

Exact match

“Für Unternehmen, Institutionen und öffentliche Verwaltung Die KEVAG Telekom (KTK) ist seit 1997 Ihr zuverlässiger Partner für professionelle Telekommunikationslösungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSchlüchtern, GermanyHQ recorded Nov 6, 202651-20038 contacts →

Exact match

“Globalcarrier – Ganzheitliche Lösungen aus einer Hand Die globalcarrier telecom GmbH ist mit über 90 mitarbeitenden Menschen und 6 Niederlassungen in Hessen und…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBerlin, GermanyHQ recorded Nov 6, 2026201-50037 contacts →

Exact match

“Das Büro der Zukunft.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Established in 2002, 42com Telecommunication GmbH started by designing a white-label VoIP platform.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSaarlouis, GermanyHQ recorded Nov 6, 2026201-50032 contacts →

Exact match

“Seit der Gründung 2007 hat die inexio Informationstechnologie und Telekommunikation KGaA eine eigene Telekommunikations-Infrastruktur mit mehr als 2.500 Kilometern modernstem…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBreitengüßbach, GermanyHQ recorded Nov 6, 202651-20030 contacts →

Exact match

“Wir sind TeleSys - communication for business Frankens größtes, herstellerunabhängiges Systemhaus.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchDarmstadt, GermanyHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Cloud- und On-Premise-Lösungen - Technologie verwandelt Die toplink-Gruppe etwas genauer betrachtet: toplink GmbH - die Cloud Company Bereits 2005 vermarktet die toplink GmbH die…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBörwang, GermanyHQ recorded Nov 6, 202651-20025 contacts →

Exact match

“Die OFF Telekommunikation GmbH ist DER Partner für moderne Kommunikationslösungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHerrsching Am Ammersee, GermanyHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“Wir sind speziell ausgebildete Dienstleister und Berater für Business-Telekommunikation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchEngelsberg, GermanyHQ recorded Nov 6, 202651-20023 contacts →

Exact match

“ConsKom steht für Consulting & Service im Bereich Telekommunikationsnetzwerke & – infrastrukturen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLangen, GermanyHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“No matter the branch you work in: An efficiently functioning corporate communication is the key for your business success.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchRatingen, GermanyHQ recorded Nov 6, 202651-20021 contacts →

Exact match

“Wir sind die kommitt Ratingen!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHerbolzheim, GermanyHQ recorded Nov 6, 202651-20021 contacts →

Exact match

“SH business COM, zählt seit über 30 Jahren zu den größten und leistungsstärksten Kommunikationszentren in Deutschland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchGoldbach, GermanyHQ recorded Nov 6, 202651-20021 contacts →

Exact match

“We offer advantages of modern telephone systems and cloud solutions as well as access to landline network and internet, all from one source.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“LIPINSKI TELEKOM ist Ihr Experte für umfassende Beratung, Planung, Installation und Betreuung von vernetzten Kommunikationslösungen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAdelsdorf, GermanyHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Your experts in information technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBrandenburg An Der Havel, GermanyHQ recorded Nov 6, 202651-20019 contacts →

Exact match

“Das Telekommunikationsunternehmen RFT Kabel aus Brandenburg an der Havel ist Spezialist für die Planung, den Bau und die Bewirtschaftung zukunftssicherer…”

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

Showing 25 of 256 telephony infrastructure providers based in Germany

See the full list, filter by size, metro and specialty, and access 1,128 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telephony infrastructure providers based in Germany at a glance

As of Nov 6, 2026
44.5%Verified-email coverage
9.9Average contacts per company
11-50Median size (employees)
8.6%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
108
11-50
89
51-200
27
201-500
8
501-1,000
1
1,001-5,000
3

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 256 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 “telephony infrastructure providers” 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 1,128 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.

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 “telephony infrastructure providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telephony infrastructure providers are there based in Germany?

RevenueBase identified 256 company matches for telephony infrastructure providers 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?

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

Which city has the most telephony infrastructure providers?

Berlin leads with 22 company records, followed by Hamburg (11) and Munich (11).

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 1,128 professional contacts with verified work emails tracked across these 256 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.