Company lists · Data refreshed September 2026

Top 25 24/7 call center services based in Germany

RevenueBase identified 123 company matches for 24/7 call center services associated with Germany as of September 2026 and tracks 1,807 professional contacts across them, including 245 with verified work emails. Berlin is the largest hub.

This list covers company matches for 24/7 call center 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 27, 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 27, 2026 How this list was built
123Companies
1,807Contacts tracked
245Verified emails
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The 25 largest 24/7 call center services based in Germany

Ranked by team size
Top 25 of 123 company matches for 24/7 call center services based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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 27, 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 27, 2026 · View company records in RevenueBase
2Exact matchOsnabrück, GermanyHQ recorded Sep 27, 20261,001-5,000294 contacts →

Exact match

“KIKXXL wurde von Andreas Kremer gegründet.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchGelsenkirchen, GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
4Exact matchHamburg, GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
5Exact matchMönchengladbach, GermanyHQ recorded Sep 27, 2026501-1,00076 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchOldenburg (oldb.), GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
7Exact matchBerlin, GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
8Exact matchAugsburg, GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
9Exact matchBerlin, GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
10Exact matchFlensburg, GermanyHQ recorded Sep 27, 2026201-50021 contacts →

Exact match

“Callcenter-Services, Telesales, Kundenservice”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchStuttgart, GermanyHQ recorded Sep 27, 202651-20014 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchBerlin, GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
13Exact matchMainz, GermanyHQ recorded Sep 27, 2026201-50011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchHeilbronn, GermanyHQ recorded Sep 27, 2026201-5009 contacts →

Exact match

“REACH XCEL GmbH operates contact centers based in Heilbronn and Prishtina.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchEttlingen, GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
16Exact matchDortmund, GermanyHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
17Exact matchErfurt, GermanyHQ recorded Sep 27, 202651-2006 contacts →

Exact match

“Wir sind stolz auf unsere kleine Manufaktur im Herzen von Erfurt, die sich 2007 zum Ziel gesetzt hat, stets hochqualitativ und immer individuell zu arbeiten.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchNuremberg, GermanyHQ recorded Sep 27, 202651-2006 contacts →

Exact match

“Ich helfe Ihnen, eine dauerhafte telefonische Erreichbarkeit zu gewährleisten, ohne dass Sie weiteres festes Personal und zusätzliche IT-Einrichtung benötigen.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchDüsseldorf, GermanyHQ recorded Sep 27, 20261-106 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchJena, GermanyHQ recorded Sep 27, 20261-105 contacts →

Exact match

“Optimiere Dein Kerngeschäft und schaffe Dir und Deinem Team dadurch mehr Fokus-Arbeitszeit!”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchBergisch Gladbach, GermanyHQ recorded Sep 27, 20261-104 contacts →

Exact match

“Sie haben Fragen, wünschen weitere Informationen oder benötigen ein besonderes Angebot Wir sind jederzeit gerne für Sie da”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchGütersloh, GermanyHQ recorded Sep 27, 202611-504 contacts →

Exact match

“Your customer support center - not just for games.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchGießen, GermanyHQ recorded Sep 27, 202611-503 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchRemshalden, GermanyHQ recorded Sep 27, 20261-102 contacts →

Exact match

“Unser größter Anspruch: Erstklassiger Kundensupport!”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchHamburg, GermanyHQ recorded Sep 27, 202651-2002 contacts →

Exact match

“Sie suchen einen zuverlässigen und kompetenten Servicepartner auf der Höhe der Zeit?”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 123 24/7 call center services based in Germany

See the full list, filter by size, metro and specialty, and access 245 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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24/7 call center services based in Germany at a glance

As of Sep 27, 2026
13.6%Verified-email coverage
14.7Average contacts per company
11-50Median size (employees)
8.1%Largest-city concentration · Berlin
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
53
11-50
23
51-200
19
201-500
10
501-1,000
7
1,001-5,000
2
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 123 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 “24/7 call center 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 245 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 27, 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 “24/7 call center services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many 24/7 call center services are there based in Germany?

RevenueBase identified 123 company matches for 24/7 call center 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 24/7 call center services?

Berlin leads with 10 company records, followed by Hamburg (6) and Essen (4).

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 245 professional contacts with verified work emails tracked across these 123 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 27, 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.