Company lists · Data refreshed November 2026

Top 25 Fiber network builders based in Germany

RevenueBase identified 422 company matches for fiber network builders associated with Germany as of November 2026 and tracks 6,475 professional contacts across them, including 3,043 with verified work emails. Berlin is the largest hub.

This list covers company matches for fiber network builders 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
422Companies
6,475Contacts tracked
3,043Verified emails
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The 25 largest fiber network builders based in Germany

Ranked by team size
Top 25 of 422 company matches for fiber network builders 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 matchDüsseldorf, GermanyHQ recorded Nov 6, 20261,001-5,0001,118 contacts →

Exact match

“Wir sind der Digital-Versorger für das private, soziale, wirtschaftliche und öffentliche Leben in den Regionen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMunich, GermanyHQ recorded Nov 6, 2026501-1,000470 contacts →

Exact match

“Als führender Glasfaseranbieter Bayerns verbindet M-net seit 1996 Menschen und Unternehmen in Bayern, im Großraum Ulm und im hessischen Main-Kinzig-Kreis mit zuverlässiger…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchHamburg, GermanyHQ recorded Nov 6, 2026501-1,000419 contacts →

Exact match

“Die Deutsche GigaNetz GmbH mit Hauptsitz in Hamburg betreibt in Deutschland einen qualitätsorientierten Glasfasernetzausbau bis in die eigenen vier Wände (FttH – Fiber To The…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchDüsseldorf, GermanyHQ recorded Nov 6, 2026201-500242 contacts →

Exact match

“Die Glasfaser-Expert*innen: Wir von der OXG Glasfaser GmbH bauen und betreiben ein schnelles und zuverlässiges Glasfaser-Netz in Deutschland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchCologne, GermanyHQ recorded Nov 6, 2026501-1,000134 contacts →

Exact match

“Phoenix Engineering Group is the leader in the field of broadband technologies and infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchOldenburg, GermanyHQ recorded Nov 6, 2026201-500133 contacts →

Exact match

“Together for the future of the internet: Glasfaser Nordwest is the joint venture between EWE and Telekom.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchEssen, GermanyHQ recorded Nov 6, 2026201-500120 contacts →

Exact match

“Leistungsstarkes Glasfaser-Internet ist das Rückgrat für digitales Leben und Arbeiten, für Industrie 4.0 und moderne Verwaltung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchKiel, GermanyHQ recorded Nov 6, 2026201-500111 contacts →

Exact match

“Wir planen, bauen und betreiben Glasfasernetze direkt bis in die Gebäude unserer Endkunden.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchFlensburg, GermanyHQ recorded Nov 6, 2026201-500105 contacts →

Exact match

“Die netzkontor nord gmbh mit Standorten in Erfurt, Flensburg, Lübeck, Neumünster, Schwerin und Wipperfürth, gehört zur bundesweittätigen Netzkontor GmbH und stellt eines der…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMunich, GermanyHQ recorded Nov 6, 2026201-500100 contacts →

Exact match

“Digitalisierungsstrategien, Glasfaserausbau, 5G-Netze und Energiewende: Wir bringen uns aktiv für die Zukunft ein.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchDüsseldorf, GermanyHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“Fiber Experts Deutschland GmbH ist ein auf Glasfaserausbau spezialisiertes Bauunternehmen mit Standorten in Düsseldorf und Köln.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchEhingen (donau), GermanyHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“The OEW Breitband GmbH was founded on August 4, 2021 by OEW, the broadband provider in the district of Sigmaringen GmbH & Co.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchEssen, GermanyHQ recorded Nov 6, 20261,001-5,00065 contacts →

Exact match

“Als Firmengruppe gemeinsam stark: Mit mehr als 2.700 Mitarbeitenden an über 40 Standorten sind wir deutschlandweit der führende Dienstleister für die Telekommunikations- und…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchDeggendorf, GermanyHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“LEONET ist seit über 16 Jahren auf dem Breitbandmarkt aktiv und setzt sich als Pionierunternehmen für digitale Chancengleichheit in ländlichen Regionen ein.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchRegensburg, GermanyHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“Die R-KOM Regensburger Telekommunikationsgesellschaft mbH wurde 1997 mit dem Ziel gegründet dem Markt ein alternatives, kostengünstiges und nachhaltiges Telekommunikationsangebot…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNorderstedt, GermanyHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“Konnektivität ist Grundlage für attraktiven Wohnraum und Wettbewerbsfähigkeit.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchDüsseldorf, GermanyHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“metrofibre entwickelt, finanziert, baut und betreibt passive Glasfasernetze für Städte und größere Gemeinden und bringt so hochleistungsfähige und skalierbare digitale…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchErfurt, GermanyHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“Wir, die Thüringer Netkom, bringen Bewegung in Ihr Internet!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSchwäbisch Gmünd, GermanyHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“ropa unterstützt Besitzer von Glasfasernetzen wie zum Beispiel Stadtwerke beim Betrieb und Ausbau ihrer Telekommunikationsnetze: Unsere Experten entwickeln passive Breitbandnetze…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSteinfurt, GermanyHQ recorded Nov 6, 2026501-1,00046 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHamburg, GermanyHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“GREENFIBER ist Ihr Partner für schnelles, stabiles und sicheres Internet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchStraelen, GermanyHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Seit über 25 Jahren zählt GasLINE zu den führenden LWL-Infrastrukturanbietern in Deutschland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact 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
24Exact matchNordhorn, GermanyHQ recorded Nov 6, 2026201-50035 contacts →

Exact match

“The company Krafteam GmbH is a leading enterprise in the field of fiber optic expansion, cable laying, HDD horizontal directional drilling, and civil engineering.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchGoldbach, GermanyHQ recorded Nov 6, 202651-20034 contacts →

Exact match

“Glasfaserausbau, Wartung und Reparaturen, Bau.”

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

Showing 25 of 422 fiber network builders based in Germany

See the full list, filter by size, metro and specialty, and access 3,043 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Fiber network builders based in Germany at a glance

As of Nov 6, 2026
47.0%Verified-email coverage
15.3Average contacts per company
11-50Median size (employees)
5.9%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
144
11-50
155
51-200
87
201-500
17
501-1,000
8
1,001-5,000
2

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 422 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 “fiber network builders” 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 3,043 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 “fiber network builders”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many fiber network builders are there based in Germany?

RevenueBase identified 422 company matches for fiber network builders 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?

Deutsche Glasfaser Unternehmensgruppe tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most fiber network builders?

Berlin leads with 25 company records, followed by Frankfurt (14) and Hamburg (14).

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 3,043 professional contacts with verified work emails tracked across these 422 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.