Company lists · Data refreshed September 2026

Top 25 Telecom call center outsourcers based in Germany

RevenueBase identified 168 company matches for telecom call center outsourcers associated with Germany as of September 2026 and tracks 3,036 professional contacts across them, including 521 with verified work emails. Berlin is the largest hub.

This list covers company matches for telecom call center outsourcers 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 29, 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 29, 2026 How this list was built
168Companies
3,036Contacts tracked
521Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest telecom call center outsourcers based in Germany

Ranked by team size
Top 25 of 168 company matches for telecom call center outsourcers based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 29, 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 29, 2026 · View company records in RevenueBase
2Exact matchDresden, GermanyHQ recorded Sep 29, 20261,001-5,000303 contacts →

Exact match

“gevekom - Your better place to work.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchOsnabrück, GermanyHQ recorded Sep 29, 20261,001-5,000294 contacts →

Exact match

“KIKXXL wurde von Andreas Kremer gegründet.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchBerlin, GermanyHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
5Exact matchGelsenkirchen, GermanyHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
6Exact matchLeipzig, GermanyHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
7Exact matchMönchengladbach, GermanyHQ recorded Sep 29, 2026501-1,00076 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchOberhausen, GermanyHQ recorded Sep 29, 2026501-1,00056 contacts →

Exact match

“Gegründet um anders zu sein.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchMünster, GermanyHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
10Exact matchNuremberg, GermanyHQ recorded Sep 29, 2026201-50041 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchMontabaur, GermanyHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
12Exact matchOldenburg (oldb.), GermanyHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
13Exact matchPassau, GermanyHQ recorded Sep 29, 2026201-50035 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchWattenscheid, GermanyHQ recorded Sep 29, 2026201-50034 contacts →

Exact match

“Als Call Center Manufaktur im Ruhrpott verstehen wir die Bedürfnisse unserer Partner, ihrer Kunden und unserer Beschäftigten.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchDüsseldorf, GermanyHQ recorded Sep 29, 202651-20032 contacts →

Exact match

“We are global telecommunications provider of international voice, data, messaging and outsourcing services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchBerlin, GermanyHQ recorded Sep 29, 202611-5031 contacts →

Exact match

“Established in 2002, 42com Telecommunication GmbH started by designing a white-label VoIP platform.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchBerlin, GermanyHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
18Exact matchAugsburg, GermanyHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
19Exact matchMünster, GermanyHQ recorded Sep 29, 202651-20023 contacts →

Exact match

“Wir sind Ihr Premium Partner für den telefonischen sowie digitalen Vertrieb.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchHeusenstamm, GermanyHQ recorded Sep 29, 2026201-50023 contacts →

Exact match

“DIGITAL DIALOG ist eine der führenden B2B TeleSales Agenturen in Deutschland – mit Standorten in der Metropolregion Rhein-Main sowie Berlin/Potsdam.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchBerlin, GermanyHQ recorded Sep 29, 202611-5023 contacts →

Exact match

“Die Services von expertcloud beginnen dort, wo traditionelle Call Center an ihre Grenzen geraten: 100% Abdeckung eines volatilen Anrufvolumens durch einen kurzfristig skalierbaren…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchFlensburg, GermanyHQ recorded Sep 29, 2026201-50021 contacts →

Exact match

“Callcenter-Services, Telesales, Kundenservice”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchLeipzig, GermanyHQ recorded Sep 29, 202651-20019 contacts →

Exact match

“Den roten oder den blauen Draht kappen?”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchFlensburg, GermanyHQ recorded Sep 29, 202651-20016 contacts →

Exact match

“Die mr.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchStuttgart, GermanyHQ recorded Sep 29, 202651-20014 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 168 telecom call center outsourcers based in Germany

See the full list, filter by size, metro and specialty, and access 521 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Telecom call center outsourcers based in Germany at a glance

As of Sep 29, 2026
17.2%Verified-email coverage
18.1Average contacts per company
11-50Median size (employees)
10.1%Largest-city concentration · Berlin
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
50
11-50
45
51-200
37
201-500
18
501-1,000
8
1,001-5,000
5
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 168 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 “telecom call center outsourcers” 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 521 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 29, 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 “telecom call center outsourcers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecom call center outsourcers are there based in Germany?

RevenueBase identified 168 company matches for telecom call center outsourcers 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 telecom call center outsourcers?

Berlin leads with 17 company records, followed by Hamburg (9) and Cologne (7).

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 521 professional contacts with verified work emails tracked across these 168 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 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 168 telecom call center outsourcers based in Germany. Start with a free account, no credit card.

Download this list →

Related lists

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.