Company lists · Data refreshed September 2026
Top 25 Call centers based in Spain
Use this directory to identify 133 call centers based in Spain, with 5,163 listed contacts and 153 listed email addresses. The directory was last updated in September 2026; Madrid is the single most-represented city among the companies on the list.
Call centers handle inbound and outbound phone interactions for clients, including customer service, sales, technical support, appointment setting, and other business communications. This list covers companies that provide call center services directly to businesses or organizations, including inbound, outbound, customer service, sales, support, and appointment-setting operations. Ranked by team size, largest first. Data current as of 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.
The 25 largest call centers based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,306 contacts → | ||||
Indirect evidence “At Unisono, for more than 20 years we have been working side by side with our customers across the globe to meet their demands as well as our own.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 459 contacts → | ||||
Partial evidence “Unitono es un referente en el sector del Contact Center.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 352 contacts → | ||||
Indirect evidence “We are CPM!” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 276 contacts → | ||||
Indirect evidence “Accept@ Servicios Integrales es una empresa especializada en la venta telefónica que pertenece al Grupo Santalucia.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 241 contacts → | ||||
Indirect evidence “Con casi 20 años de experiencia en la prestación de Servicios de Atención al Cliente/Ciudadano, Contactel ha logrado posicionarse en Canarias como el grupo empresarial referente…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 157 contacts → | ||||
Partial evidence “Somos un contact center especializado en gestión, venta y atención al cliente.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 142 contacts → | ||||
Indirect evidence “Somos una empresa fundada en 2004 especializada en Servicios de Telemarketing y atención al cliente.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 75 contacts → | ||||
Partial evidence “Nordic Operation Center is a business process outsourcer (BPO), specialising in customer experience, sales and marketing services via all communication channels including voice…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 74 contacts → | ||||
Strong evidence “Cosmos es un Call Center ofrece a sus clientes un servicio omnicanal de última tecnología desde sus centros en España, Rumanía, Paraguay y Marruecos.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 62 contacts → | ||||
Indirect evidence “Somos una Compañía de GESTION TELEFONICA (No nos gusta posicionarnos como “Telemarketing”), ubicada en Madrid Creada el 01 de Octubre de 1988; cronológicamente, somos de las 5…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 51 contacts → | ||||
Partial evidence “Rainbow Comunicaciones is a BPO Contact Center leader in multilingual campaigns.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 51 contacts → | ||||
Partial evidence “Con más de dos décadas impulsando la excelencia en la atención al cliente, Logikaline es hoy un referente en consultoría y externalización de servicios de Contact Center para…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 42 contacts → | ||||
Partial evidence “Plusnet Solutions specializes in providing Contact Center technology solutions that streamline business processes.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 40 contacts → | ||||
Indirect evidence “We are a Contact Centre as a Service (CCaaS) company, pioneer in the development of artificial intelligence, with an omnichannel CRM for contact centres and the innovative…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 39 contacts → | ||||
Indirect evidence “Proporcionamos soluciones a la creciente necesidad de empresas que buscan mejorar sus relaciones con sus clientes a través de un servicio avanzado, profesionalizado y multicanal…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 34 contacts → | ||||
Partial evidence “At our contact center company, we pride ourselves on providing top-notch customer service that goes above and beyond what our competitors offer.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 34 contacts → | ||||
Partial evidence “Desde su nacimiento en 2012, Weber Solutions ha revolucionado el modelo de adquisición de tecnología en los Contact Centers en un momento de crisis económica y cambio de…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 26 contacts → | ||||
Partial evidence “Somos el CONTACT CENTER para los MOMENTOS DE LA VERDAD < 15 años ofreciendo un servicio de atención al cliente de alto valor añadido.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 25 contacts → | ||||
Strong evidence “Call Center Barcelona is made up of a team of dedicated professionals offering a unique outsourcing service.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 24 contacts → | ||||
Indirect evidence “Golden Line dispone de “300” puestos que utilizan la tecnología más avanzada en tratamiento de voz y datos.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 23 contacts → | ||||
Partial evidence “En TM System Contact Center desarrollamos campañas para tu empresa de Televentas, Telemarketing y Atención al Cliente.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 23 contacts → | ||||
Partial evidence “Contact Center strategic & management consulting.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 22 contacts → | ||||
Partial evidence “En Grupo Dtel, estamos dedicados a facilitar servicios de Contact Center, especializándonos en ventas y fidelización al cliente.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 21 contacts → | ||||
Indirect evidence “Agencia de publicidad y Marketing.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 contacts → | ||||
Partial evidence “Team with deep knowledge in the Contact Center Technologies world mainly: Multichannel Self-service Routing Cognitive processes Recording, quality and Workforce Management…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: call centers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names call centers.
- Partial evidence
- Its own public description names part of call centers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name call centers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 133 call centers based in Spain
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Call centers based in Spain at a glance
As of Sep 14, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 133 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 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 Spain whose own description of what they do matches “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 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 call centers, and records with no verified work email. Companies headquartered outside Spain 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, 153 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.
Call centers by metro
- Call centers in Madrid25
Frequently asked
How many call centers are listed based in Spain?
133 call centers are listed based in Spain, with 5,163 contacts and 153 email addresses provided.
Which city has the most call centers in this list?
Madrid is the single most-represented city among the companies on the list.
How can I contact call centers in this directory?
The directory includes 5,163 listed contacts and 153 listed email addresses for the call centers included.
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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.