Company lists · Data verified August 2026

Top 25 Customer service outsourcing companies based in Spain

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 232 companies tracked

There are 232 customer service outsourcing companies headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 35,768 professional contacts across them, including 3,207 with verified work emails and 201 with mobile numbers. Madrid is the largest hub.

This list covers customer service outsourcing companies headquartered in Spain, 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.

232Companies

35,768Contacts tracked

3,207Verified emails

201Mobile numbers

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The 25 largest customer service outsourcing companies based in Spain

Ranked by team size

Top 25 of 232 customer service outsourcing companies based in Spain, 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	Konecta	Madrid	10001+	23,643	2,655
2	Emergia Contact Center	Madrid	5,001-10,000	2,348	155
3	Inelcom, Ingeniería Electrónica Comercial	Madrid	1,001-5,000	982	24
4	Arvato CRM Solutions Iberia & Latam	Madrid	10001+	610	6
5	Fastco	Madrid	1,001-5,000	601	16
6	Atento España	Madrid	10001+	520	35
7	Unitono Contact Center	San Fernando De Henares	5,001-10,000	459	27
8	MST Holding	Barcelona	1,001-5,000	398	2
9	Winche Redes Comerciales	Barcelona	501-1,000	357	21
10	CPM International Contact Centre	Barcelona	1,001-5,000	355	9
11	Sellbytel Group Spain	Barcelona	5,001-10,000	308	32
12	BE Call Group	Madrid	1,001-5,000	289	31
13	Stream Mobile	Cartes	501-1,000	157	5
14	Externalia Outsourcing Comercial	Barcelona	201-500	156	41
15	Grupo Alarcon	Bilbao	1,001-5,000	144	2
16	Servicios Reunidos	La Coruna	201-500	114	11
17	Grupo UB	Madrid	501-1,000	109	14
18	Catserveis Sxxi	Sant Cugat Del Valles	201-500	97	3
19	Codeactivos	Madrid	51-200	87	8
20	Cosmos Call Center	Madrid	501-1,000	74	4
21	Logikaline	Abaltzisketa	51-200	50	1
22	Xentia Customer Services	Vigo	51-200	42	2
23	Jcp2call	Malaga	501-1,000	39	1
24	Essentiel-Outsourcing	Barcelona	201-500	34	5
25	BJS Legal Services	Barcelona	51-200	32	7

Showing 25 of 232 customer service outsourcing companies based in Spain

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Customer service outsourcing companies based in Spain at a glance

As of Aug 28, 2026

11-50Median size (employees)

MadridLargest hub · 62 HQs

201Contacts with mobile numbers

5Emails 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

10001+

Customer service outsourcing companies by metro

Metro	Companies
Customer service outsourcing companies in Madrid	62
Customer service outsourcing companies in Barcelona	42
Customer service outsourcing companies in Malaga	8
Customer service outsourcing companies in Sevilla	6
Customer service outsourcing companies in Valencia	5
Customer service outsourcing companies in Vigo	5
Customer service outsourcing companies in Fuengirola	4

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 Spain.
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; 5 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 Spain?

There are 232 customer service outsourcing companies headquartered in Spain as of August 2026 (RevenueBase).

What is the largest company on this list?

Konecta, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most customer service outsourcing companies?

Madrid leads with 62 headquartered companies, followed by Barcelona (42) and Malaga (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 3,207 verified decision-maker contacts tracked across these 232 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.