Company lists · Data refreshed November 2026

Top 16 Offshore administrative support services based in Spain

RevenueBase identified 150 company matches for offshore administrative support services associated with Spain as of November 2026 and tracks 1,839 professional contacts across them, including 64 with verified work emails. Madrid is the largest hub.

This list covers company matches for offshore administrative support services associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
150Companies
1,839Contacts tracked
64Verified emails
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The 16 largest offshore administrative support services based in Spain

Ranked by team size
Top 16 of 150 company matches for offshore administrative support services based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBarcelona, SpainHQ recorded Nov 6, 20265,001-10,000314 contacts →

Exact match

“The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchGijón, SpainHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“Nos dedicamos a la externalización de procesos de negocio y estamos especializados en los relacionados con la atención y gestión del cliente.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“BJS Legal Services - Collections & BPO, permite a sus clientes centrarse en su Core Business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVigo, SpainHQ recorded Nov 6, 2026501-1,00031 contacts →

Exact match

“GRUPO BASE es una compañía con más de 30 años de servicios de calidad a las empresas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Asesoria integral”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20015 contacts →

Exact match

“En byperson nos dedicamos a la Externalización de Servicios.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchTerrassa, SpainHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Making paperwork easy”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBarcelona, SpainHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Integra Advisers ofrece una solución definitiva a sus necesidades administrativas actuales, poniendo a su disposición un equipo de profesionales para las principales áreas de la…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHospitalet De Llobregat, SpainHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Ponemos a su disposición todos los servicios necesarios para hacer más sencilla y ágil la gestión de su empresa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMadrid, SpainHQ recorded Nov 6, 2026201-5005 contacts →

Exact match

“En Excellent somos especialistas en la externalización de servicios generales a empresas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchOviedo, SpainHQ recorded Nov 6, 20261-105 contacts →

Exact match

“GESTIONALIA es una empresa de servicios, filial de Vaciero, S.L.P, dedicada a la externalización de funciones y procesos de los departamentos de administración, finanzas y…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchFuengirola Mijas, SpainHQ recorded Nov 6, 202611-502 contacts →

Exact match

“Benjo is the creator and supplier of enterprise-grade customer support and back office services on a multinational scale.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchFuengirola, SpainHQ recorded Nov 6, 202611-502 contacts →

Exact match

“B2B Solutions We are offering solutions to companies for marketing and service needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchTerrassa, SpainHQ recorded Nov 6, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBenitachell, SpainHQ recorded Nov 6, 20261-101 contacts →

Exact match

“My goal is to enable small business owners to concentrate on what they do best, by knowing that I am taking care of everyday business needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMálaga, SpainHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Nos encargamos de todas las tareas que tienes que hacer en tu empresa para que tú te dediques a aquellas que te hacen ganar dinero.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 16 of 150 offshore administrative support services based in Spain

See the full list, filter by size, metro and specialty, and access 64 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore administrative support services based in Spain at a glance

As of Nov 6, 2026
3.5%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
23.3%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
110
11-50
22
51-200
10
201-500
4
501-1,000
1
1,001-5,000
1
5,001-10,000
1

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 150 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Spain whose business descriptions match “offshore administrative support services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 64 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “offshore administrative support services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore administrative support services are there based in Spain?

RevenueBase identified 150 company matches for offshore administrative support services associated with Spain as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Sellbytel Group Spain tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most offshore administrative support services?

Madrid leads with 35 company records, followed by Barcelona (17) and Malaga (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 64 professional contacts with verified work emails tracked across these 150 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.