Company lists · Data refreshed September 2026

Top 25 Customer support companies based in Germany

RevenueBase identified 242 customer support companies headquartered in Germany as of September 2026 and tracks 3,145 professional contacts across them, including 517 with verified work emails. Berlin is the largest hub.

This list covers customer support 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.

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
242Companies
3,145Contacts tracked
517Verified emails
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The 25 largest customer support companies based in Germany

Ranked by team size
Top 25 of 242 customer support companies 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 customer support 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNuremberg, GermanyHQ checked Sep 19, 20265,001-10,000359 contacts →

Indirect evidence

“The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceOsnabrück, GermanyHQ checked Sep 19, 20261,001-5,000294 contacts →

Indirect evidence

“KIKXXL wurde von Andreas Kremer gegründet.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceBerlin, GermanyHQ checked Sep 19, 20261,001-5,000257 contacts →

Indirect evidence

“DCS Communication Center, your "Global Partner" in costumer management business process outsourcing since 1995.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceGelsenkirchen, GermanyHQ checked Sep 19, 20261,001-5,000237 contacts →

Partial evidence

“AMEVIDA is one of the largest owner-managed companies in the German call center and customer care industry and is headquartered in Gelsenkirchen.”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceBerlin, GermanyHQ checked Sep 19, 20261,001-5,000116 contacts →

Indirect evidence

“Die CMX Solutions GmbH ist Teil der CMX Group, einem inhabergeführten Unternehmen, das seit der Gründung im Jahr 2012 kontinuierlich zu einem führenden Anbieter von…”

Source: RevenueBase Database · checked Sep 19, 2026
6Partial evidenceHamburg, GermanyHQ checked Sep 19, 2026201-500112 contacts →

Partial evidence

“Newstel Worldwide is a trusted partner to clients across various industries, helping them achieve customer success and grow their businesses through digitally-led customer service…”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceAachen, GermanyHQ checked Sep 19, 2026201-50079 contacts →

Indirect evidence

“Flaixible ist ein junges, dynamisches und ambitioniertes Unternehmen.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceMönchengladbach, GermanyHQ checked Sep 19, 2026501-1,00076 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceBerlin, GermanyHQ checked Sep 19, 2026201-50073 contacts →

Indirect evidence

“ja-dialog – Wir sind dein Kundenservice.”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceHeilbronn, GermanyHQ checked Sep 19, 2026501-1,00061 contacts →

Partial evidence

“Seit über 25 Jahren verantworten wir Kundensupport- und Serviceprozesse für Unternehmen mit hohen Ansprüchen an Customer Experience.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceOberhausen, GermanyHQ checked Sep 19, 2026501-1,00056 contacts →

Indirect evidence

“Gegründet um anders zu sein.”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidenceMünster, GermanyHQ checked Sep 19, 2026201-50051 contacts →

Partial evidence

“As Europe’s leading allround service provider for Telecommunications and Customer Relationship Management we strongly inspire our customers by offering them high-end technologies…”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceOldenburg (oldb.), GermanyHQ checked Sep 19, 2026201-50038 contacts →

Indirect evidence

“Call-Center & Service-Dienstleister überzeugt auf 1.998qm mit über 180 festen Mitarbeitern, durch Qualität, Effizienz & Transparenz.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidencePassau, GermanyHQ checked Sep 19, 2026201-50035 contacts →

Indirect evidence

“CommuniGate ist ein Premiumdienstleister für die gesamte Bandbreite der schriftlichen und telefonischen, vertriebs- und serviceorientierten Kundenkommunikation.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceStuttgart, GermanyHQ checked Sep 19, 202651-20032 contacts →

Indirect evidence

“Glöckle direct GmbH is an directmaketing and services company based out of 86 Daimlerstrasse, Stuttgart, Baden-Wurttemberg, Germany.”

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidenceStuttgart, GermanyHQ checked Sep 19, 202651-20031 contacts →

Partial evidence

“As a dynamic Company we focus on an excellent customer service and international customer relationship management.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceBerlin, GermanyHQ checked Sep 19, 202651-20028 contacts →

Indirect evidence

“Die voxpark GmbH ist ein etabliertes und wachsendes Kundenservice-Center, das sich erfolgreich in den Bereichen Telemarketing und ganzheitliches Kundenmanagement positioniert hat.”

Source: RevenueBase Database · checked Sep 19, 2026
18Partial evidenceBöblingen, GermanyHQ checked Sep 19, 202611-5027 contacts →

Partial evidence

“We offer comprehensive IT consulting and integration services in the areas of customer service, contact center and customer experience.”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceAugsburg, GermanyHQ checked Sep 19, 2026201-50024 contacts →

Indirect evidence

“Die Mitarbeiter der Dialog-Factory bieten weit mehr Service als ein klassisches Callcenter.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceFlensburg, GermanyHQ checked Sep 19, 2026201-50021 contacts →

Indirect evidence

“Callcenter-Services, Telesales, Kundenservice”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceLeipzig, GermanyHQ checked Sep 19, 20261-1020 contacts →

Indirect evidence

“colpari: collaboration partners international Die Zufriedenheit der Kunden ist das wichtigste Gut für ein Unternehmen.”

Source: RevenueBase Database · checked Sep 19, 2026
22Strong evidenceMannheim, GermanyHQ checked Sep 19, 2026201-50019 contacts →

Strong evidence

“HEAR THE SMILE IN OUR VOICE At LUATEL, we don’t just deliver customer support, we create meaningful customer experiences at scale.”

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceLeipzig, GermanyHQ checked Sep 19, 202651-20019 contacts →

Indirect evidence

“Den roten oder den blauen Draht kappen?”

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceLangen, GermanyHQ checked Sep 19, 202611-5018 contacts →

Indirect evidence

“No matter the branch you work in: An efficiently functioning corporate communication is the key for your business success.”

Source: RevenueBase Database · checked Sep 19, 2026
25Indirect evidenceEssen, GermanyHQ checked Sep 19, 202611-5016 contacts →

Indirect evidence

“Die RUF Beratung ist ein Beratungsunternehmen rund um Kundenservice und Contact Center.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 242 customer support companies based in Germany

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Customer support companies based in Germany at a glance

As of Sep 19, 2026
16.4%Verified-email coverage
13.0Average contacts per company
11-50Median size (employees)
7.4%Largest-city concentration · Berlin
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
102
11-50
54
51-200
36
201-500
17
501-1,000
10
1,001-5,000
6
5,001-10,000
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 242 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 customer support 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 “customer support 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 customer support 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 customer support 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, 517 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 customer support 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 customer support companies are there based in Germany?

RevenueBase identified 242 customer support 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?

Sellbytel Group, headquartered in Nuremberg, tops this list with the largest team on record.

Which city has the most customer support companies?

Berlin leads with 18 headquartered companies, followed by Hamburg (13) and Dusseldorf (6).

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 517 verified decision-maker contacts tracked across these 242 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.