Company lists · Data refreshed September 2026

Top 23 Virtual call centers based in Germany

RevenueBase identified 48 virtual call centers headquartered in Germany as of September 2026 and tracks 1,278 professional contacts across them, including 209 with verified work emails. Hamburg is the largest hub.

This list covers virtual call centers 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 14, 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 14, 2026 86% judged on-target in blind review
48Companies
1,278Contacts tracked
209Verified emails
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The 23 largest virtual call centers based in Germany

Ranked by team size
Top 23 of 48 virtual call centers based in Germany, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to virtual call centers: 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 14, 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 14, 2026
2Indirect evidenceOsnabrück, GermanyHQ checked Sep 14, 20261,001-5,000294 contacts →

Indirect evidence

“KIKXXL wurde von Andreas Kremer gegründet.”

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceHamburg, GermanyHQ checked Sep 14, 2026201-500112 contacts →

Indirect 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 14, 2026
4Indirect evidenceMönchengladbach, GermanyHQ checked Sep 14, 2026501-1,00076 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceHamburg, GermanyHQ checked Sep 14, 2026501-1,00058 contacts →

Indirect evidence

“Hey!”

Source: RevenueBase Database · checked Sep 14, 2026
6Strong evidenceOldenburg (oldb.), GermanyHQ checked Sep 14, 2026201-50038 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
7Indirect evidenceAugsburg, GermanyHQ checked Sep 14, 2026201-50024 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
8Strong evidenceBerlin, GermanyHQ checked Sep 14, 202611-5023 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceFlensburg, GermanyHQ checked Sep 14, 2026201-50021 contacts →

Indirect evidence

“Callcenter-Services, Telesales, Kundenservice”

Source: RevenueBase Database · checked Sep 14, 2026
10Indirect evidenceLeipzig, GermanyHQ checked Sep 14, 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 14, 2026
11Indirect evidenceStuttgart, GermanyHQ checked Sep 14, 202651-20014 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
12Indirect evidenceLübeck, GermanyHQ checked Sep 14, 20261-1013 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 14, 2026
13Strong evidenceDresden, GermanyHQ checked Sep 14, 20261-1011 contacts →

Strong evidence

“Cloud IT Services GmbH, a German company founded in 2010, excells in the development of Outbound Call Center solutions.”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceKöln, GermanyHQ checked Sep 14, 202651-20011 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
15Partial evidenceHeilbronn, GermanyHQ checked Sep 14, 2026201-5009 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
16Indirect evidenceNürnberg, GermanyHQ checked Sep 14, 202651-2006 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
17Indirect evidenceWeimar, GermanyHQ checked Sep 14, 202611-505 contacts →

Indirect evidence

“Somit können wir Sie im Falle von Problemen oder Fragen direkt aus der Ferne unterstützen.”

Source: RevenueBase Database · checked Sep 14, 2026
18Indirect evidenceJena, GermanyHQ checked Sep 14, 20261-105 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
19Strong evidenceAachen, GermanyHQ checked Sep 14, 202611-503 contacts →

Strong evidence

“Das Unternehmen Enterprise Communications GmbH mit dem Sitz in Mönchengladbach, hat sich mit einer eigenen Call Center Software stark auf dem Markt etabliert.”

Source: RevenueBase Database · checked Sep 14, 2026
20Indirect evidenceEssen, GermanyHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Das Betreiben eines Callcenters, das Unternehmen dabei unterstützt deren Vertriebsziele zu erreichen, Inbound- sowie Outbound-Telefonie, Kundenservice, technischer Support…”

Source: RevenueBase Database · checked Sep 14, 2026
21Indirect evidenceStuttgart, GermanyHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Die Telepro Connect GmbH mit Sitz in Stuttgart ist ein aufstrebendes Callcenter mit klarem Fokus auf Qualität und Kommunikation.”

Source: RevenueBase Database · checked Sep 14, 2026
22Indirect evidenceGroßostheim, GermanyHQ checked Sep 14, 20261-101 contacts →

Indirect evidence

“Als besonderen Service bieten wir unseren Kunden schnelle Hilfe per Fernwartung an.”

Source: RevenueBase Database · checked Sep 14, 2026
23Indirect evidenceLudwigslust, GermanyHQ checked Sep 14, 2026n/a1 contacts →

Indirect evidence

“Kundenservice steht bei uns an erster Stelle.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 23 of 48 virtual call centers based in Germany

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Virtual call centers based in Germany at a glance

As of Sep 14, 2026
16.4%Verified-email coverage
26.6Average contacts per company
11-50Median size (employees)
10.4%Largest-city concentration · Hamburg
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
9
51-200
4
201-500
6
501-1,000
5
1,001-5,000
1
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 48 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 virtual call centers, 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 “virtual call centers”. 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 virtual call centers), 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 virtual call centers, 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, 209 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 14, 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 virtual call centers, 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 virtual call centers are there based in Germany?

RevenueBase identified 48 virtual call centers 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 virtual call centers?

Hamburg leads with 5 headquartered companies, followed by Aachen (2) and Berlin (2).

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 209 verified decision-maker contacts tracked across these 48 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 14, 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.