Company lists · Data refreshed September 2026
Top 25 Backbone cabling companies based in Germany
RevenueBase identified 192 backbone cabling companies headquartered in Germany as of September 2026 and tracks 1,099 professional contacts across them, including 348 with verified work emails. Hamburg is the largest hub.
This list covers backbone cabling companies 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.
The 25 largest backbone cabling companies based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 125 contacts → | ||||
Partial evidence “Since 1991, Rosenberger Optical Solutions & Infrastructure (Rosenberger OSI) has been a recognized expert for fiber-based connectivity, cabling solutions and infrastructure…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 83 contacts → | ||||
Indirect evidence “Fast.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 45 contacts → | ||||
Indirect evidence “Konnektivität ist Grundlage für attraktiven Wohnraum und Wettbewerbsfähigkeit.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 36 contacts → | ||||
Indirect evidence “Libra Gmbh ist eine Geschäftseinheit als Vehikel für ausgebildete und erfahrene Fachleute in der Branche für den Bau von Glasfasernetzen, wo sie ihre Fähigkeiten und Kreativität…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 32 contacts → | ||||
Indirect evidence “Firmenprofil Impressum: Über HOB: Gegründet wurde das Unternehmen HOB 1964 von Horst Brandstätter.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 28 contacts → | ||||
Indirect evidence “Wir sind eine Unternehmensgruppe welches sich auf Coax/LWL Gebäudeverkabelung, Service & Wartung, Infratechnik, Tiefbau, Kabel & Fernmeldebau sowie Kupfer und Glasfaserbau &…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 26 contacts → | ||||
Indirect evidence “Mit der GLASFASER RUHR haben Sie einen Partner an Ihrer Seite, der über 25 Jahre Erfahrung im Aufbau, Betrieb und in Sicherung von Netzwerkinfrastrukturen mitbringt.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 25 contacts → | ||||
Indirect evidence “CWP Glasfasertechnik is your trusted partner for comprehensive fiber optic network solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 21 contacts → | ||||
Indirect evidence “Netz Intelligenz GmbH is part of a group of companies and has several department managers, project managers, site engineers, foremen and approximately over five hundred employees…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 21 contacts → | ||||
Indirect evidence “BraCom ist ein etabliertes Telekommunikationsunternehmen, das zu einem bedeutenden Akteur auf dem norwegischen Glasfaser- und Telekommunikationsmarkt geworden ist.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 contacts → | ||||
Indirect evidence “Premium-Line Systems is a part of a global manufacturing group with more than 20 years of experience in the field of networking market.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 15 contacts → | ||||
Partial evidence “LWL-Sachsenkabel GmbH, based in Germany, is a leading provider of fiber optic-based infrastructure solutions, cabling systems and services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 14 contacts → | ||||
Indirect evidence “We are the manufactory of modernity in the field of information technology.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Indirect evidence “TeKaNet GmbH Telekommunikationsservice is a company based out of 25 Marienstraße, Aschaffenburg, Bavaria, Germany.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 12 contacts → | ||||
Partial evidence “For more than 30 years the tde - trans data elektronik GmbH, an internationally successful company, has specialised in the development and production of scalable cabling systems…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 12 contacts → | ||||
Indirect evidence “Schneider & Partner Computervernetzung GmbH is a management consulting company based out of Dorfstraße 21A, Ahrensfelde, Germany.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 11 contacts → | ||||
Indirect evidence “Breitbandnetze aus einer Hand - Europaweit.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 11 contacts → | ||||
Indirect evidence “Installations- und Wartungsdienste für Glasfasernetze” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Indirect evidence “IHR SPEZIALIST FÜR LWL-KABEL MIT LICHTGESCHWINDIGKEIT IN DIE ZUKUNFT!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 contacts → | ||||
Indirect evidence “Ihr Breitband–Ausbauprojekt ist bei uns in besten Händen, weil wir alles berücksichtigen: Grobplanung, Feinplanung, Termin- und Prozessplanung mit allen Anträgen, Genehmigungen…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Indirect evidence “Ihr Komplettanbieter im Glasfaserausbau.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 8 contacts → | ||||
Indirect evidence “Comconic ist seit 1996 im liberalisierten Markt der ITK tätig und verfügt daher als Partner nahezu aller namhaften Anbieter von Sprach- & Datenkommunikation über eine große…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 8 contacts → | ||||
Indirect evidence “Die BKN bietet mit ihrem Team die Installation von modernsten Telekommunikationsanlagen, die Planung und Umsetzung von professionellen Standortvernetzungen, die Einrichtung…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Partial evidence “IB-IT Datacenter GmbH Technical Service Provider for Datacenters - Structured Cabling - Rack & Stack - IBX Operations - Colocation Logistics - Colocation Management - 24/7 On-Site…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Indirect evidence “Kernkompetenz unseres Unternehmens ist die Erbringung von Montage- und Lieferleistungen, insbesondere im Bereich der Fernmeldetechnik und dem damit verbundenen Kabelbau, die…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: backbone cabling companies. 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 backbone cabling companies.
- Partial evidence
- Its own public description names part of backbone cabling companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name backbone cabling companies. 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 192 backbone cabling companies based in Germany
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Backbone cabling companies based in Germany at a glance
As of Sep 19, 2026Companies by employee count
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 192 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 backbone cabling companies, 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 “backbone cabling companies”. 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 backbone cabling companies), 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 backbone cabling companies, 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, 348 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 backbone cabling companies, 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 backbone cabling companies are there based in Germany?
RevenueBase identified 192 backbone cabling companies 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-Osi Gmbh & Co. OHG, headquartered in Augsburg, tops this list with the largest team on record.
Which city has the most backbone cabling companies?
Hamburg leads with 9 headquartered companies, followed by Berlin (7) and Frankfurt (5).
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 348 verified decision-maker contacts tracked across these 192 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.
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