Company lists · Data refreshed September 2026

Top 25 Telecommunications infrastructure manufacturers based in Germany

Name: Telecommunications infrastructure manufacturers based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 324 companies tracked

RevenueBase identified 324 telecommunications infrastructure manufacturers headquartered in Germany as of September 2026 and tracks 6,735 professional contacts across them, including 2,572 with verified work emails. Berlin is the largest hub.

This list covers telecommunications infrastructure manufacturers headquartered in Germany, 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 19, 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 19, 2026 86% judged on-target in blind review

324Companies

6,735Contacts tracked

2,572Verified emails

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The 25 largest telecommunications infrastructure manufacturers based in Germany

Ranked by team size

Top 25 of 324 telecommunications infrastructure manufacturers based in Germany, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications infrastructure manufacturers: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Rosenberger Group	Partial evidence	Fridolfing, GermanyHQ checked Sep 19, 2026	10001+	1,158 contacts →
	Partial evidence “Rosenberger is one of the world‘s leading manufacturers of impedance-controlled and optical connectivity solutions.” Source: RevenueBase Database · checked Sep 19, 2026
2	OBO Bettermann Group	Indirect evidence	Menden, GermanyHQ checked Sep 19, 2026	1,001-5,000	643 contacts →
	Indirect evidence “OBO Bettermann stands for tradition and innovation in equal measure – and that has been the case since 1911.” Source: RevenueBase Database · checked Sep 19, 2026
3	Axians Germany	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 19, 2026	1,001-5,000	403 contacts →
	Indirect evidence “AXIANS is the corporate brand for network infrastrucutures and corporate communications of VINCI Energies, one of the leading European providers of energy and information…” Source: RevenueBase Database · checked Sep 19, 2026
4	Plusnet Gmbh	Indirect evidence	Köln, GermanyHQ checked Sep 19, 2026	201-500	248 contacts →
	Indirect evidence “Die Plusnet GmbH, eine Tochtergesellschaft der EnBW, ist ein deutsches Telekommunikationsunternehmen mit Fokus auf Geschäftskunden.” Source: RevenueBase Database · checked Sep 19, 2026
5	Netcom BW Gmbh	Indirect evidence	Ellwangen (jagst), GermanyHQ checked Sep 19, 2026	201-500	161 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
6	DNS NET Internet Service Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	201-500	145 contacts →
	Indirect evidence “Menschen mit Lichtgeschwindigkeit begeistern – das ist die Vision, die die rund 250 Mitarbeiter:innen der DNS:NET Familie antreibt.” Source: RevenueBase Database · checked Sep 19, 2026
7	Circet Deutschland SE	Indirect evidence	Bergisch Gladbach, GermanyHQ checked Sep 19, 2026	1,001-5,000	134 contacts →
	Indirect evidence “WER WIR SIND Die Circet Deutschland SE ist ein Unternehmen der Circet Group, dem führenden weltweiten Dienstleister für den Aufbau und die Wartung von…” Source: RevenueBase Database · checked Sep 19, 2026
8	S. Siedle & Söhne Telefon- UND Telegrafenwerke OHG	Indirect evidence	Furtwangen Im Schwarzwald, GermanyHQ checked Sep 19, 2026	501-1,000	119 contacts →
	Indirect evidence “S.” Source: RevenueBase Database · checked Sep 19, 2026
9	Mugler SE	Indirect evidence	Oberlungwitz, GermanyHQ checked Sep 19, 2026	501-1,000	115 contacts →
	Indirect evidence “Bei der MUGLER SE dreht sich alles um Telekommunikation.” Source: RevenueBase Database · checked Sep 19, 2026
10	Aconnic	Indirect evidence	Munich, GermanyHQ checked Sep 19, 2026	201-500	94 contacts →
	Indirect evidence “aconnic has emerged from the UET Group and its operating companies and brands including albis-elcon, SUCONI, Albis Engineering and Albis Technologies.” Source: RevenueBase Database · checked Sep 19, 2026
11	Fiber Experts Deutschland Gmbh	Indirect evidence	Düsseldorf, GermanyHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “Fiber Experts Deutschland GmbH ist ein auf Glasfaserausbau spezialisiertes Bauunternehmen mit Standorten in Düsseldorf und Köln.” Source: RevenueBase Database · checked Sep 19, 2026
12	Zener Telekom Gmbh	Indirect evidence	Kriftel, GermanyHQ checked Sep 19, 2026	201-500	85 contacts →
	Indirect evidence “Grupo Zener ist seit über 35 Jahren eine der führenden Anlagenbaufirmen in den Bereichen Mobilfunk, Glasfaserinstallation und erneuerbare Energien in spanischsprechenden Märkten…” Source: RevenueBase Database · checked Sep 19, 2026
13	Efb-Elektronik Gmbh	Indirect evidence	Bielefeld, GermanyHQ checked Sep 19, 2026	201-500	83 contacts →
	Indirect evidence “Fast.” Source: RevenueBase Database · checked Sep 19, 2026
14	Langmatz Gmbh	Indirect evidence	Garmisch-partenkirchen, GermanyHQ checked Sep 19, 2026	201-500	78 contacts →
	Indirect evidence “for technical system solutions Langmatz is an international industrial company specialising in plastic and metal processing based in Garmisch-Partenkirchen, Germany.” Source: RevenueBase Database · checked Sep 19, 2026
15	Belden Deutschland Gmbh	Indirect evidence	Neckartenzlingen, GermanyHQ checked Sep 19, 2026	5,001-10,000	74 contacts →
	Indirect evidence “Durch die Kombination von wirtschaftlichem Know-how mit den technologisch fortschrittlichsten Produkten unserer führenden Marken Belden®, GarrettCom®, Hirschmann™ and Lumberg…” Source: RevenueBase Database · checked Sep 19, 2026
16	Pasm Power & AIR Solutions	Indirect evidence	Munich, GermanyHQ checked Sep 19, 2026	51-200	71 contacts →
	Indirect evidence “PASM - Power and Air Condition Solution Management GmbH gewährleistet die Verfügbarkeit kritischer Infrastrukturanlagen aus dem Sektor Informationstechnik und Telekommunikation…” Source: RevenueBase Database · checked Sep 19, 2026
17	TKI MBH	Indirect evidence	Chemnitz, GermanyHQ checked Sep 19, 2026	51-200	68 contacts →
	Indirect evidence “Als mittelständisches Unternehmen in der Telekommunikationsbranche sind wir mit mehr als 150 Mitarbeitern und über 30 Jahren Erfahrung ein namhafter Dienstleister im deutschen…” Source: RevenueBase Database · checked Sep 19, 2026
18	Enaco Energieanlagen	Indirect evidence	Maisach, GermanyHQ checked Sep 19, 2026	501-1,000	65 contacts →
	Indirect evidence “ENACO Energieanlagen - und Kommunikationstechnik GmbH is a construction company based out of TULPENSTRAßE 19, Maisach, Germany.” Source: RevenueBase Database · checked Sep 19, 2026
19	HKT Gmbh	Indirect evidence	Bochum, GermanyHQ checked Sep 19, 2026	201-500	62 contacts →
	Indirect evidence “Als eines der führenden Unternehmen in den Bereichen Engineering und Operations sorgen wir bundesweit sowie auch international für funktionierende Infrastrukturen im Festnetz- und…” Source: RevenueBase Database · checked Sep 19, 2026
20	Flexoptix Gmbh	Partial evidence	Darmstadt, GermanyHQ checked Sep 19, 2026	51-200	61 contacts →
	Partial evidence “Flexoptix is a telecommunications company based in Darmstadt.” Source: RevenueBase Database · checked Sep 19, 2026
21	Lünecom Kommunikationslösungen Gmbh	Indirect evidence	Lüneburg, GermanyHQ checked Sep 19, 2026	51-200	59 contacts →
	Indirect evidence “Die Lünecom ist ein in der Hansestadt Lüneburg ansässiger Telekommunikationsdienstleister, Netzbetreiber und Internet Service Provider.” Source: RevenueBase Database · checked Sep 19, 2026
22	R-Kom Gmbh	Indirect evidence	Regensburg, GermanyHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence “Die R-KOM Regensburger Telekommunikationsgesellschaft mbH wurde 1997 mit dem Ziel gegründet dem Markt ein alternatives, kostengünstiges und nachhaltiges Telekommunikationsangebot…” Source: RevenueBase Database · checked Sep 19, 2026
23	Microsens Gmbh & Co. KG	Partial evidence	Hamm, GermanyHQ checked Sep 19, 2026	51-200	45 contacts →
	Partial evidence “MICROSENS is one of the world’s leading manufacturers of fiber optic transmission systems.” Source: RevenueBase Database · checked Sep 19, 2026
24	STF Tele Consult	Indirect evidence	Dülmen, GermanyHQ checked Sep 19, 2026	201-500	41 contacts →
	Indirect evidence “Die STF TeleConsult bietet ihren Kunden umfassende 360-Grad Telekommunikationsdienstleistungen: von der Messung, über Planung, Realisierung, Inbetriebnahme und Abnahme.” Source: RevenueBase Database · checked Sep 19, 2026
25	Uniberg Gmbh	Partial evidence	Bebensee, GermanyHQ checked Sep 19, 2026	51-200	40 contacts →
	Partial evidence “UNIBERG is a specialist in internet networks and mobile infrastructure technologies with market-leading expertise in engineering, implementation, programming and operation.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: telecommunications infrastructure manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names telecommunications infrastructure manufacturers.
Partial evidence: Its own public description names part of telecommunications infrastructure manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications infrastructure manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 324 telecommunications infrastructure manufacturers based in Germany

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Telecommunications infrastructure manufacturers based in Germany at a glance

As of Sep 19, 2026

38.2%Verified-email coverage

20.8Average contacts per company

11-50Median size (employees)

5.9%Largest-city concentration · Berlin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

116

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 324 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 telecommunications infrastructure manufacturers, 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 Germany whose own description of what they do matches “telecommunications infrastructure manufacturers”. 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 telecommunications infrastructure manufacturers), 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 telecommunications infrastructure manufacturers, and records with no verified work email. Companies headquartered outside Germany 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, 2,572 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 19, 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 telecommunications infrastructure manufacturers, 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 telecommunications infrastructure manufacturers are there based in Germany?

RevenueBase identified 324 telecommunications infrastructure manufacturers headquartered in Germany 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?

Rosenberger Group, headquartered in Fridolfing, tops this list with the largest team on record.

Which city has the most telecommunications infrastructure manufacturers?

Berlin leads with 19 headquartered companies, followed by Hamburg (12) and Dusseldorf (8).

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 2,572 verified decision-maker contacts tracked across these 324 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 19, 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.