Company lists · Data refreshed September 2026

Top 25 Outsourcing customer services based in Germany

RevenueBase identified 154 company matches for outsourcing customer services associated with Germany as of September 2026 and tracks 2,330 professional contacts across them, including 414 with verified work emails. Berlin is the largest hub.

This list covers company matches for outsourcing customer services 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 September 21, 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 Sep 21, 2026 How this list was built
154Companies
2,330Contacts tracked
414Verified emails
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The 25 largest outsourcing customer services based in Germany

Ranked by team size
Top 25 of 154 company matches for outsourcing customer services based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchNuremberg, GermanyHQ recorded Sep 21, 20265,001-10,000359 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchBerlin, GermanyHQ recorded Sep 21, 20261,001-5,000257 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchGelsenkirchen, GermanyHQ recorded Sep 21, 20261,001-5,000237 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchDüsseldorf, GermanyHQ recorded Sep 21, 20261,001-5,000136 contacts →

Exact match

“Die Adecco Business Solutions GmbH ist eine 100%ige Tochter der Adecco Personaldienstleistungen GmbH und seit über 30 Jahren in Deutschland Ihr Full Service Partner für komplexe…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchHamburg, GermanyHQ recorded Sep 21, 2026201-500112 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchLeipzig, GermanyHQ recorded Sep 21, 2026201-50097 contacts →

Exact match

“Since 1992 TAS AG has been providing all-round solutions for customer communications, making it one of Germany's oldest complex full-service operators in dialogue management.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchMönchengladbach, GermanyHQ recorded Sep 21, 2026501-1,00076 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchBerlin, GermanyHQ recorded Sep 21, 2026201-50073 contacts →

Exact match

“ja-dialog – Wir sind dein Kundenservice.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchHeilbronn, GermanyHQ recorded Sep 21, 2026501-1,00061 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchOberhausen, GermanyHQ recorded Sep 21, 2026501-1,00056 contacts →

Exact match

“Gegründet um anders zu sein.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchOldenburg (oldb.), GermanyHQ recorded Sep 21, 2026201-50038 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchStuttgart, GermanyHQ recorded Sep 21, 202651-20031 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchBerlin, GermanyHQ recorded Sep 21, 202651-20028 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchAugsburg, GermanyHQ recorded Sep 21, 2026201-50024 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchFlensburg, GermanyHQ recorded Sep 21, 2026201-50021 contacts →

Exact match

“Callcenter-Services, Telesales, Kundenservice”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLeipzig, GermanyHQ recorded Sep 21, 20261-1020 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchLeipzig, GermanyHQ recorded Sep 21, 202651-20019 contacts →

Exact match

“Den roten oder den blauen Draht kappen?”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchFlensburg, GermanyHQ recorded Sep 21, 202651-20016 contacts →

Exact match

“Die mr.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchStuttgart, GermanyHQ recorded Sep 21, 202651-20014 contacts →

Exact match

“Kundenservice, der überzeugt – dafür steht die EUA.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchBerlin, GermanyHQ recorded Sep 21, 202651-20012 contacts →

Exact match

“Seit mehr als 20 Jahren übernehmen wir rund um die Uhr – an 365 Tagen im Jahr – Geschäftsprozesse im Kundenservice, technischen Support, in der Fernwartung sowie in der Notdienst-…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchCologne, GermanyHQ recorded Sep 21, 202651-20011 contacts →

Exact match

“Als Spezialist für Telefon-Sekretariatsdienste und das Outsourcing von Telefonzentralen schafft TELiAS mit den vier Geschäftsbereichen Sekretariatsdienste, Mehrwertdienste…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchMainz, GermanyHQ recorded Sep 21, 2026201-50011 contacts →

Exact match

“Die Communikom Gruppe ist der richtige Ansprechpartner im Bereich Telekommunikation.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchEttlingen, GermanyHQ recorded Sep 21, 202611-509 contacts →

Exact match

“Termitel – Ihr Partner für exzellentes Telemarketing & Customer Care Sie suchen einen starken Partner für Ihre Call Center- und Customer Care-Aktivitäten?”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchDortmund, GermanyHQ recorded Sep 21, 202651-2009 contacts →

Exact match

“Seit über 20 Jahren sind wir Ihr Partner für Call- und ServiceCenter Dienstleistungen!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchNuremberg, GermanyHQ recorded Sep 21, 202651-2008 contacts →

Exact match

“In den letzten 40 Jahren hat sich die intertel dialog-service-gmbh auf die Bereiche Vertrieb und Kundenservice spezialisiert.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 154 outsourcing customer services based in Germany

See the full list, filter by size, metro and specialty, and access 414 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outsourcing customer services based in Germany at a glance

As of Sep 21, 2026
17.8%Verified-email coverage
15.1Average contacts per company
11-50Median size (employees)
11.7%Largest-city concentration · Berlin
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
62
11-50
31
51-200
31
201-500
14
501-1,000
7
1,001-5,000
3
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 154 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 “outsourcing customer services” 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 414 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 September 21, 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 “outsourcing customer services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourcing customer services are there based in Germany?

RevenueBase identified 154 company matches for outsourcing customer services associated with Germany as of September 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?

Sellbytel Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most outsourcing customer services?

Berlin leads with 18 company records, followed by Hamburg (6) and Munich (6).

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 414 professional contacts with verified work emails tracked across these 154 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 September 21, 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.