Company lists · Data verified August 2026

Top 25 Customer service outsourcing companies based in Germany

Name: Customer service 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 220 companies tracked

There are 220 customer service outsourcing companies headquartered in Germany (RevenueBase, August 2026). RevenueBase tracks 3,720 professional contacts across them, including 708 with verified work emails and 43 with mobile numbers. Berlin is the largest hub.

This list covers customer service 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.

220Companies

3,720Contacts tracked

708Verified emails

43Mobile numbers

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The 25 largest customer service outsourcing companies based in Germany

Ranked by team size

Top 25 of 220 customer service 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	Kikxxl Gmbh	Dortmund	1,001-5,000	294	32
3	DCS Communication Center	Berlin	1,001-5,000	255	37
4	Amevida SE	Dortmund	1,001-5,000	237	41
5	MUUUH	Berlin	201-500	171	94
6	Bambus Group	Hamburg	1,001-5,000	168	28
7	Adecco Business Solutions	Hamburg	1,001-5,000	136	31
8	Across SRL	Amburgo	51-200	114	65
9	TAS AG	Leipzig	201-500	95	29
10	Flaixible Gmbh	Duren	201-500	79	15
11	Ja-Dialog	Bitterfeld-Wolfen	201-500	75	25
12	Cho-Time Gmbh	Monchengladbach	501-1,000	75	24
13	HEY Contact Heroes Gmbh	Hamburg	501-1,000	60	14
14	Indeca Business Gmbh	Heilbronn	501-1,000	59	9
15	Comvendo Gmbh	Oberhausen	501-1,000	57	11
16	Zwei Löwen Mediawerk Gmbh	Munster	201-500	51	2
17	Allysca Assistance Gmbh	Munich	51-200	45	1
18	Regiocom Customer Care	Frankfurt Am Main	n/a	40	13
19	Avitea Industrieservice Gmbh	Lippstadt	501-1,000	38	15
20	Teleteam Call-Center UND Service Gmbh	Oldenburg Oldb.	201-500	38	5
21	Communigate Kommunikationsservice Gmbh	Passau	201-500	35	12
22	PVS Relationship Services Gmbh & Co. KG	Stuttgart	51-200	33	12
23	Glöckle Direct Gmbh	Stuttgart	51-200	32	20
24	BKD Gmbh	Recklinghausen	201-500	31	7
25	Voxpark Gmbh	Berlin	51-200	26	2

Showing 25 of 220 customer service outsourcing companies based in Germany

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Customer service outsourcing companies based in Germany at a glance

As of Aug 28, 2026

11-50Median size (employees)

BerlinLargest hub · 24 HQs

43Contacts 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 service outsourcing companies by metro

Metro	Companies
Customer service outsourcing companies in Berlin	24
Customer service outsourcing companies in Hamburg	12
Customer service outsourcing companies in Munchen	8
Customer service outsourcing companies in Leipzig	6
Customer service outsourcing companies in Essen	6
Customer service outsourcing companies in Dusseldorf	6
Customer service outsourcing companies in Nurnberg	5

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 service 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 service outsourcing companies are there based in Germany?

There are 220 customer service 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 service outsourcing companies?

Berlin leads with 24 headquartered companies, followed by Hamburg (12) and Munchen (8).

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 708 verified decision-maker contacts tracked across these 220 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.