Company lists · Data refreshed September 2026

Top 25 Telecom infrastructure software companies based in Germany

Name: Telecom infrastructure software companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 275 companies tracked

RevenueBase identified 275 telecom infrastructure software companies headquartered in Germany as of September 2026 and tracks 4,089 professional contacts across them, including 1,474 with verified work emails and 70 with mobile numbers. Berlin is the largest hub.

This list covers telecom infrastructure software 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 6, 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 6, 2026 86% judged on-target in blind review

275Companies

4,089Contacts tracked

1,474Verified emails

70Mobile numbers

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The 25 largest telecom infrastructure software companies based in Germany

Ranked by team size

Top 25 of 275 telecom infrastructure software companies based in Germany, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to telecom infrastructure software companies: 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	Plusnet Gmbh	Indirect evidence	Köln, GermanyHQ checked Sep 6, 2026	201-500	248 contacts →
	“Die Plusnet GmbH, eine Tochtergesellschaft der EnBW, ist ein deutsches Telekommunikationsunternehmen mit Fokus auf Geschäftskunden.” Source: company website · checked Sep 6, 2026
2	FNT Software	Strong evidence	Ellwangen, GermanyHQ checked Sep 6, 2026	201-500	182 contacts →
	“FNT Software aspires to make managing highly complex digital infrastructures, such as IT and telecommunications infrastructures easier for companies and public authorities.” Source: company website · checked Sep 6, 2026
3	Phoenix Engineering	Partial evidence	Cologne, GermanyHQ checked Sep 6, 2026	501-1,000	181 contacts →
	“Phoenix Engineering Group is the leader in the field of broadband technologies and infrastructure.” Source: company website · checked Sep 6, 2026
4	Circet Deutschland SE	Indirect evidence	Bergisch Gladbach, GermanyHQ checked Sep 6, 2026	1,001-5,000	134 contacts →
	“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: company website · checked Sep 6, 2026
5	Axiros	Indirect evidence	Baierbrunn, GermanyHQ checked Sep 6, 2026	51-200	125 contacts →
	“CONNECTING BILLIONS of People & Devices Globally.” Source: company website · checked Sep 6, 2026
6	Mugler SE	Indirect evidence	Oberlungwitz, GermanyHQ checked Sep 6, 2026	501-1,000	115 contacts →
	“Bei der MUGLER SE dreht sich alles um Telekommunikation.” Source: company website · checked Sep 6, 2026
7	GIP Exyr Gmbh	Indirect evidence	Mainz, GermanyHQ checked Sep 6, 2026	51-200	108 contacts →
	“Die Mission von Xyna ist die intelligente Vernetzung der Welt – unter dem Leitmotiv »Thinking Beyond Computing«.” Source: company website · checked Sep 6, 2026
8	MRK	Indirect evidence	München, GermanyHQ checked Sep 6, 2026	201-500	101 contacts →
	“Digitalisierungsstrategien, Glasfaserausbau, 5G-Netze und Energiewende: Wir bringen uns aktiv für die Zukunft ein.” Source: company website · checked Sep 6, 2026
9	Xantaro	Partial evidence	Köln, GermanyHQ checked Sep 6, 2026	51-200	93 contacts →
	“Xantaro specializes in technologies, software and services for Carriers, ISPs, Hosting and Cloud Providers as well as for Operators of Data Centres and Campus Networks.” Source: company website · checked Sep 6, 2026
10	Fiber Experts Deutschland Gmbh	Indirect evidence	Düsseldorf, GermanyHQ checked Sep 6, 2026	51-200	88 contacts →
	“Fiber Experts Deutschland GmbH ist ein auf Glasfaserausbau spezialisiertes Bauunternehmen mit Standorten in Düsseldorf und Köln.” Source: company website · checked Sep 6, 2026
11	Ng-Voice	Partial evidence	Hamburg, GermanyHQ checked Sep 6, 2026	51-200	88 contacts →
	“ng-voice is a Germany-based telco software provider, dedicated to revolutionising voice production in 4G/5G networks for both consumer and IoT use cases.” Source: company website · checked Sep 6, 2026
12	European Computer Telecoms	Indirect evidence	Munich, GermanyHQ checked Sep 6, 2026	51-200	88 contacts →
	“ECT is a tech company dedicated to better business outcomes for communications service providers (CSPs) and their customers.” Source: company website · checked Sep 6, 2026
13	Zener Telekom Gmbh	Indirect evidence	Kriftel, GermanyHQ checked Sep 6, 2026	201-500	85 contacts →
	“Grupo Zener ist seit über 35 Jahren eine der führenden Anlagenbaufirmen in den Bereichen Mobilfunk, Glasfaserinstallation und erneuerbare Energien in spanischsprechenden Märkten…” Source: company website · checked Sep 6, 2026
14	Infosim	Indirect evidence	Würzburg, GermanyHQ checked Sep 6, 2026	51-200	76 contacts →
	“Infosim® is a leading provider of automated Service Fulfillment and Service Assurance solutions for Telcos, ISPs, Managed Service Providers, and Corporations.” Source: company website · checked Sep 6, 2026
15	TKI MBH	Indirect evidence	Chemnitz, GermanyHQ checked Sep 6, 2026	51-200	68 contacts →
	“Als mittelständisches Unternehmen in der Telekommunikationsbranche sind wir mit mehr als 150 Mitarbeitern und über 30 Jahren Erfahrung ein namhafter Dienstleister im deutschen…” Source: company website · checked Sep 6, 2026
16	Condat	Partial evidence	Berlin, GermanyHQ checked Sep 6, 2026	51-200	66 contacts →
	“Berlin-based Condat AG belongs to the leading vendors of innovative software solutions in the fields of media, mobility and monitoring.” Source: company website · checked Sep 6, 2026
17	Deepup	Partial evidence	Bonn, GermanyHQ checked Sep 6, 2026	51-200	65 contacts →
	“Welcome to DeepUp, where innovation meets precision in the realm of underground network infrastructure management!” Source: company website · checked Sep 6, 2026
18	HKT Gmbh	Indirect evidence	Bochum, GermanyHQ checked Sep 6, 2026	201-500	62 contacts →
	“Als eines der führenden Unternehmen in den Bereichen Engineering und Operations sorgen wir bundesweit sowie auch international für funktionierende Infrastrukturen im Festnetz- und…” Source: company website · checked Sep 6, 2026
19	Gftd Services Gmbh	Indirect evidence	Dortmund, GermanyHQ checked Sep 6, 2026	201-500	55 contacts →
	“GfTD Services bietet bundesweit erstklassige Serviceleistungen in den Bereichen Telekommunikation, eMobility und New Energy.” Source: company website · checked Sep 6, 2026
20	Syserso Networks Gmbh	Indirect evidence	Hannover, GermanyHQ checked Sep 6, 2026	51-200	43 contacts →
	“Syserso Networks realisiert mit mehr als 25 Jahren Erfahrung zukunftssichere Telekommunikationsnetze für öffentliche und private Netzbetreiber.” Source: company website · checked Sep 6, 2026
21	Uniberg Gmbh	Partial evidence	Bebensee, GermanyHQ checked Sep 6, 2026	51-200	40 contacts →
	“UNIBERG is a specialist in internet networks and mobile infrastructure technologies with market-leading expertise in engineering, implementation, programming and operation.” Source: company website · checked Sep 6, 2026
22	Caigos Gmbh	Indirect evidence	Kirkel, GermanyHQ checked Sep 6, 2026	51-200	32 contacts →
	“Getreu unserer Mission „Menschen.Perspektiven.Lösungen“ leisten wir mit unseren Produkten und Services einen wichtigen Beitrag zur Vereinfachung der Arbeitsprozesse im Asset- und…” Source: company website · checked Sep 6, 2026
23	Inexio	Indirect evidence	Saarlouis, GermanyHQ checked Sep 6, 2026	201-500	31 contacts →
	“Seit der Gründung 2007 hat die inexio Informationstechnologie und Telekommunikation KGaA eine eigene Telekommunikations-Infrastruktur mit mehr als 2.500 Kilometern modernstem…” Source: company website · checked Sep 6, 2026
24	Iconec	Indirect evidence	GermanyHQ checked Sep 6, 2026	201-500	31 contacts →
	“iconec is a global leading recruitment services company.” Source: company website · checked Sep 6, 2026
25	GEO Data Gmbh	Indirect evidence	Westhausen, GermanyHQ checked Sep 6, 2026	51-200	28 contacts →
	“Breitbandausbau für die Netze der Zukunft – von der Planung bis zur Realisierung.” Source: company website · checked Sep 6, 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: telecom infrastructure software 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 telecom infrastructure software companies.
Partial evidence: Its own public description names part of telecom infrastructure software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom infrastructure software 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 275 telecom infrastructure software companies based in Germany

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Telecom infrastructure software companies based in Germany at a glance

As of Sep 6, 2026

36.0%Verified-email coverage

1.7%Mobile-number coverage

14.9Average contacts per company

11-50Median size (employees)

8.4%Largest-city concentration · Berlin

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

105

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

1,3580–30

10831–60

061–90

290–180

6180+

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 telecom infrastructure software 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 “telecom infrastructure software 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 telecom infrastructure software 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 telecom infrastructure software 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, 1,474 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 6, 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 telecom infrastructure software 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 telecom infrastructure software companies are there based in Germany?

RevenueBase identified 275 telecom infrastructure software 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?

Plusnet Gmbh, headquartered in Koln, tops this list with the largest team on record.

Which city has the most telecom infrastructure software companies?

Berlin leads with 23 headquartered companies, followed by Dusseldorf (11) and Hamburg (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 1,474 verified decision-maker contacts tracked across these 275 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 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 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.