Company lists · Data refreshed September 2026

Top 25 Telecom expense management consultants based in Germany

RevenueBase identified 51 telecom expense management consultants headquartered in Germany as of September 2026 and tracks 224 professional contacts across them, including 91 with verified work emails. Hamburg is the largest hub.

This list covers telecom expense management consultants 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 29, 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 29, 2026 86% judged on-target in blind review
51Companies
224Contacts tracked
91Verified emails
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The 25 largest telecom expense management consultants based in Germany

Ranked by team size
Top 25 of 51 telecom expense management consultants based in Germany, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to telecom expense management consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDortmund, GermanyHQ checked Sep 29, 2026201-50039 contacts →

Indirect evidence

“GfTD steht für effiziente Beratungs- und Dienstleistungen im Telekommunikationsmarkt.”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceHerrsching Am Ammersee, GermanyHQ checked Sep 29, 202611-5020 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceBad Münstereifel, GermanyHQ checked Sep 29, 202611-5014 contacts →

Partial evidence

“DATANET is Europe's leading provider of service solutions for the digitization of all business processes relating to a telecommunications connection with the aim of highly…”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceSchwalbach Am Taunus, GermanyHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“Wir sind ein Anbieter- und Produktneutrales Beratungsunternehmen für ganzheitliche Telekommunikationslösungen (TK/UC, Mobilfunk (auch Vertragsmanagement), Festnetz (ISDN/SIP)…”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceHamburg, GermanyHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“Was macht costconsult seit über 25 Jahren?”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceHeilbronn, GermanyHQ checked Sep 29, 20261-108 contacts →

Indirect evidence

“Als B2B Telekommunikationsberater arbeiten wir bei NV Connect mit Unternehmen jeder Größe zusammen, um die Telekommunikationsinfrastruktur effektiver zu gestalten.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceNeumünster, GermanyHQ checked Sep 29, 202611-507 contacts →

Indirect evidence

“Kein Business ohne Telekommunikation – und genau hier setzen wir an.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceBerlin, GermanyHQ checked Sep 29, 202651-2006 contacts →

Indirect evidence

“Die Common Sense Consulting GmbH (CSC) ist im DACH-Raum die erste All-in-One-Beratung für die kommerzielle Optimierung sämtlicher IT- und Telekommunikationsverträge von…”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidenceKropp, GermanyHQ checked Sep 29, 202611-506 contacts →

Partial evidence

“Bodo Peters TK-Management GmbH: ihr Partner für effiziente Telekommunikationsverwaltung.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceHamburg, GermanyHQ checked Sep 29, 20261-106 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceLamstedt, GermanyHQ checked Sep 29, 20261-106 contacts →

Indirect evidence

“Wir beraten und betreuen Groß und Mittelständische Unternehmen für alle relevanten Anbieter der Telekommunikation”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceHamburg, GermanyHQ checked Sep 29, 20261-105 contacts →

Partial evidence

“We share our knowledge and experience in the field of telecommunication and information technology.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceMainz, GermanyHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“Kontaktieren Sie uns noch heute, wir beraten Sie gerne zu unseren Telekommunikations Dienstleistungen.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceHeidenheim, GermanyHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceFreising, GermanyHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“Welcher Telefonanbieter ist der richtige für mich?”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceBerlin, GermanyHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“The Problem: Complexity and Intransparency a) Up to millions of data records - For each connection individual and complex call profiles (call duration, data volume, partner…”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceDüsseldorf, GermanyHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Wir sind ein Team von erfahrenen Unternehmensberatern sowie Netzwerkspezialisten.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceGilching, GermanyHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“Die Karo-Solutions • schafft Transparenz • vergleicht und bewertet Produkte, Services und Trends • erstellt Konzepte und Pflichtenhefte mit branchenspezifischer Expertise •…”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceDüsseldorf, GermanyHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“Die NCS Netcare Consulting and Engineering Services GmbH mit Hauptsitz in Düsseldorf bietet Dienstleistungen rund um das Thema Telekommunikation an.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceAugsburg, GermanyHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Seit 2004 unterstützen wir unsere Kunden im Bereich der Telekommunikationskosten-Optimierung.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceFürth, GermanyHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Für alle, die den Jingle der Warteschleife schon mitsingen können.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceLandsberg Am Lech, GermanyHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Sparen Sie an Kosten und Zeit, nicht an Qualität!”

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceMunich, GermanyHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“CCS - Das C-ITK Systemhaus”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceAndechs, GermanyHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Wir unterstützen und entlasten unsere Kunden professionell und unabhängig bei der Optimierung Ihrer Leistungen und Kosten in den Bereichen Telekommunikation und IT.”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceWuppertal, GermanyHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Im Jahr 1993 wurde das Dienstleistungsunternehmen für alle Fragen rund um die Telekommunikation gegründet.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 51 telecom expense management consultants based in Germany

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Telecom expense management consultants based in Germany at a glance

As of Sep 29, 2026
40.6%Verified-email coverage
4.4Average contacts per company
1-10Median size (employees)
9.8%Largest-city concentration · Hamburg
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
15
51-200
2
201-500
1

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 51 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 telecom expense management consultants, 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 expense management consultants”. 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 expense management consultants), 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 expense management consultants, 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, 91 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 29, 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 expense management consultants, 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 expense management consultants are there based in Germany?

RevenueBase identified 51 telecom expense management consultants 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?

Gftd Gmbh, headquartered in Dortmund, tops this list with the largest team on record.

Which city has the most telecom expense management consultants?

Hamburg leads with 5 headquartered companies, followed by Munich (4) and Berlin (3).

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 91 verified decision-maker contacts tracked across these 51 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 29, 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.