Company lists · Data refreshed September 2026

Top 25 Customer service outsourcing agencies based in Germany

RevenueBase identified 269 company matches for customer service outsourcing agencies associated with Germany as of September 2026 and tracks 4,366 professional contacts across them, including 877 with verified work emails. Berlin is the largest hub.

This list covers company matches for customer service outsourcing agencies 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
269Companies
4,366Contacts tracked
877Verified emails
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The 25 largest customer service outsourcing agencies based in Germany

Ranked by team size
Top 25 of 269 company matches for customer service outsourcing agencies 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 matchOsnabrück, GermanyHQ recorded Sep 21, 20261,001-5,000294 contacts →

Exact match

“KIKXXL wurde von Andreas Kremer gegründet.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact 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
4Exact 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
5Exact matchOsnabrück, GermanyHQ recorded Sep 21, 2026201-500168 contacts →

Exact match

“Consulting, Technology & Solutions für Customer Service, Sales & Marketing Wir sind überzeugt: Echter Erfolg entsteht dort, wo Unternehmen ihre Kund:innen konsequent in den…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact 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
7Exact matchLeipzig, GermanyHQ recorded Sep 21, 20265,001-10,000120 contacts →

Exact match

“Ströer X ist der größte deutsche Business Process Outsourcing (BPO)-Anbieter und Spezialist für Dialogmarketing, Customer Experience, Sales und digitale Transformation.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchBerlin, GermanyHQ recorded Sep 21, 20261,001-5,000116 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact 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
10Exact 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
11Exact matchAachen, GermanyHQ recorded Sep 21, 2026201-50079 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchVallendar, GermanyHQ recorded Sep 21, 2026501-1,00077 contacts →

Exact match

“Globl.Contact ist der erste und einzige 100% digitale Customer Service Partner.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact 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
14Exact 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
15Exact matchBerlin- Prenzlauer Berg, GermanyHQ recorded Sep 21, 2026201-50063 contacts →

Exact match

“VIAFON was founded in 1996 and is one of Germanys leading distribution agencies in B2B Telesales and Quality Assurance.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact 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
17Exact matchHamburg, GermanyHQ recorded Sep 21, 2026501-1,00058 contacts →

Exact match

“Hey!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact 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
19Exact matchMünster, GermanyHQ recorded Sep 21, 2026201-50051 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchMunich, GermanyHQ recorded Sep 21, 202651-20045 contacts →

Exact match

“ALLYSCA – B2B2C-SERVICES FÜR ASSISTANCE, CLAIMS MANAGEMENT UND CUSTOMER SERVICE Wir unterstützen Menschen weltweit und rund um die Uhr – in Situationen, in denen schnelle…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchMülheim An Der Ruhr, GermanyHQ recorded Sep 21, 2026201-50044 contacts →

Exact match

“Wir setzen auf erfolgreiches Wachstum unserer Partner und sind Spezialisten im Bereich Sales, Service & Dialogmarketing.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchNuremberg, GermanyHQ recorded Sep 21, 2026201-50041 contacts →

Exact match

“Wir sind ein spezialisierter und flexibler Contact Center-Dienstleister mit Consulting-Einheit.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchMagdeburg, GermanyHQ recorded Sep 21, 2026n/a41 contacts →

Exact match

“regiocom Customer Care ist der größte inhabergeführte Service-Anbieter in Deutschland.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchMontabaur, GermanyHQ recorded Sep 21, 202651-20038 contacts →

Exact match

“Bei Anruf: Telefonengel“ global office bietet telefonische Kommunikation in natürlicher Sprache als zusätzlichen Touchpoint für Wirtschaft und Verwaltung.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact 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

Showing 25 of 269 customer service outsourcing agencies based in Germany

See the full list, filter by size, metro and specialty, and access 877 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Customer service outsourcing agencies based in Germany at a glance

As of Sep 21, 2026
20.1%Verified-email coverage
16.2Average contacts per company
11-50Median size (employees)
10.8%Largest-city concentration · Berlin
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
93
11-50
58
51-200
57
201-500
27
501-1,000
12
1,001-5,000
8
5,001-10,000
4

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 269 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 “customer service outsourcing agencies” 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 877 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 “customer service outsourcing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer service outsourcing agencies are there based in Germany?

RevenueBase identified 269 company matches for customer service outsourcing agencies 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 customer service outsourcing agencies?

Berlin leads with 29 company records, followed by Munich (12) and Hamburg (11).

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 877 professional contacts with verified work emails tracked across these 269 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.