Company lists · Data verified August 2026

Top 25 Customer support outsourcing companies based in Germany

Name: Customer support outsourcing companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 161 companies tracked

There are 161 customer support outsourcing companies headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 2,378 professional contacts across them, including 362 with verified work emails and 25 with mobile numbers. Berlin is the largest hub.

This list covers customer support outsourcing companies headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

161Companies

2,378Contacts tracked

362Verified emails

25Mobile numbers

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The 25 largest customer support outsourcing companies based in Germany

Ranked by team size

Top 25 of 161 customer support outsourcing companies based in Germany, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Sellbytel Group	Nuremberg	5,001-10,000	363	33
2	DCS Communication Center	Berlin	1,001-5,000	255	37
3	Amevida SE	Dortmund	1,001-5,000	237	41
4	Bambus Group	Hamburg	1,001-5,000	168	28
5	Adecco Business Solutions	Hamburg	1,001-5,000	136	31
6	Ja-Dialog	Bitterfeld-Wolfen	201-500	75	25
7	Cho-Time Gmbh	Monchengladbach	501-1,000	75	24
8	HEY Contact Heroes Gmbh	Hamburg	501-1,000	60	14
9	Indeca Business Gmbh	Heilbronn	501-1,000	59	9
10	Comvendo Gmbh	Oberhausen	501-1,000	57	11
11	Teleteam Call-Center UND Service Gmbh	Oldenburg Oldb.	201-500	38	5
12	PVS Relationship Services Gmbh & Co. KG	Stuttgart	51-200	33	12
13	Glöckle Direct Gmbh	Stuttgart	51-200	32	20
14	Voxpark Gmbh	Berlin	51-200	26	2
15	Dialog-Factory Gmbh	Augsburg	201-500	24	7
16	Care4as Gmbh	Flensburg	201-500	21	2
17	NET Group Beteiligungen Gmbh & Co. KG	Flensburg	51-200	16	4
18	EUA Euro Union Assistance Gmbh	Stuttgart	51-200	14	3
19	Servicum Gmbh	Jena	11-50	13	6
20	Callways Call Center Gmbh	Berlin	51-200	12	1
21	Telias Gruppe	Koln	51-200	11	3
22	Communikom Gruppe	Mainz	201-500	11	1
23	Termitel Gmbh	Ettlingen	11-50	9	4
24	Wistec Gmbh	Bielefeld	11-50	9	3
25	O-Ton Call Center Services Gmbh	Dortmund	51-200	9	1

Showing 25 of 161 customer support outsourcing companies based in Germany

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Customer support outsourcing companies based in Germany at a glance

As of Aug 28, 2026

11-50Median size (employees)

BerlinLargest hub · 12 HQs

25Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Customer support outsourcing companies by metro

Metro	Companies
Customer support outsourcing companies in Berlin	12
Customer support outsourcing companies in Hamburg	11
Customer support outsourcing companies in Essen	6
Customer support outsourcing companies in Dusseldorf	5
Customer support outsourcing companies in Nurnberg	4
Customer support outsourcing companies in Leipzig	4
Customer support outsourcing companies in Koln	3

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “customer support outsourcing companies”, with match quality audited by blind human judging, and headquartered in Germany.
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: Contact records re-verify on a rolling cadence; 2 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many customer support outsourcing companies are there based in Germany?

There are 161 customer support outsourcing companies headquartered in Germany as of August 2026 (RevenueBase).

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 customer support outsourcing companies?

Berlin leads with 12 headquartered companies, followed by Hamburg (11) and Essen (6).

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 362 verified decision-maker contacts tracked across these 161 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.