Company lists · Data refreshed September 2026

Top 25 Answer engine optimization companies based in Spain

Name: Answer engine optimization companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 903 companies tracked

RevenueBase identified 903 answer engine optimization companies headquartered in Spain as of September 2026 and tracks 3,562 professional contacts across them, including 516 with verified work emails and 118 with mobile numbers. Madrid is the largest hub.

This list covers answer engine optimization companies headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 2, 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.

How to read this list RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

903Companies

3,562Contacts tracked

516Verified emails

118Mobile numbers

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The 25 largest answer engine optimization companies based in Spain

Ranked by team size

Top 25 of 903 answer engine optimization companies based in Spain, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to answer engine optimization companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Bigseo	Indirect evidence	Barcelona, Spain	51-200	110 contacts →
	Indirect evidence “En nuestra agencia SEO en Barcelona somos unos apasionados del posicionamiento web.” Source: RevenueBase Database · checked Sep 2, 2026
2	Royal Comunicación	Indirect evidence	Barcelona, Spain	51-200	84 contacts →
	Indirect evidence “Royal Comunicación es una empresa dedicada al Marketing online teniendo como fin principal optimizar y rentabilizar los recursos de las empresas en la red.” Source: RevenueBase Database · checked Sep 2, 2026
3	internet.republica	Partial evidence	Madrid, Spain	51-200	73 contacts →
	Partial evidence “25 years of experience in Digital Marketing, Search Engines, Social Media, Performance, e-Commerce, Media, Content… Our ™ approach (enhanced by AI) integrates Content, Media and…” Source: RevenueBase Database · checked Sep 2, 2026
4	Interamplify	Indirect evidence	Alhama De Murcia, Spain	51-200	73 contacts →
	Indirect evidence “Since 2012, at Interamplify, we have become strategic partners for brands and companies seeking to expand digitally on a global scale.” Source: RevenueBase Database · checked Sep 2, 2026
5	Comunicare	Indirect evidence	Madrid, Spain	51-200	47 contacts →
	Indirect evidence “Comunicare es una empresa especializada en Marketing Online y Desarrollo Web para empresas.” Source: RevenueBase Database · checked Sep 2, 2026
6	Improove	Indirect evidence	Madrid, Spain	51-200	43 contacts →
	Indirect evidence “We are a digital growth firm with SEO at its core, on a mission to build strong foundations for scalable growth ensuring our clients don't just participate in the market - they…” Source: RevenueBase Database · checked Sep 2, 2026
7	Keyweo	Indirect evidence	Barcelona, Spain	11-50	39 contacts →
	Indirect evidence “Keyweo is a digital marketing agency founded in 2018 and based in Barcelona.” Source: RevenueBase Database · checked Sep 2, 2026
8	agenciaseo.eu	Indirect evidence	Valencia, Spain	11-50	37 contacts →
	Indirect evidence “Esta empresa se creó para dar respuesta a una necesidad cada vez más demandada: el posicionamiento web.” Source: RevenueBase Database · checked Sep 2, 2026
9	Idento Agencia DE Marketing Digital	Indirect evidence	Armilla, Spain	11-50	37 contacts →
	Indirect evidence “IDENTO - Diseño y Programación Web - Marketing Online, Posicionamiento en Buscadores, SEM, SEO, Redes Sociales, SMM, SMO, Email Marketing, Analítica Web, Google Analytics - Socio…” Source: RevenueBase Database · checked Sep 2, 2026
10	Acceseo	Indirect evidence	Alcoy, Spain	11-50	31 contacts →
	Indirect evidence “de páginas web accesibles.” Source: RevenueBase Database · checked Sep 2, 2026
11	Human Level Communications	Indirect evidence	Dalacant, Spain	11-50	30 contacts →
	Indirect evidence “Since 2001, we've been boosting the online discoverability of leading international companies and media outlets.” Source: RevenueBase Database · checked Sep 2, 2026
12	Ecoeureka	Indirect evidence	Madrid, Spain	11-50	17 contacts →
	Indirect evidence “Agencia de Marketing Digital \| Hacemos SEO, SEM, Diseño Web, Redes Sociales, Vídeo Marketing, Email Marketing y Mantenimiento de Sistemas.” Source: RevenueBase Database · checked Sep 2, 2026
13	Novaigrup	Indirect evidence	Les Franqueses Del Valles, Spain	11-50	15 contacts →
	Indirect evidence “Novaigrup, agencia de ingeniería web y marketing en Internet.” Source: RevenueBase Database · checked Sep 2, 2026
14	SEO Coaching	Indirect evidence	Barcelona, Spain	11-50	15 contacts →
	Indirect evidence “Seocoaching es una empresa especializada en posicionamiento web con resultados comprobados y servicios SEO garantizados.” Source: RevenueBase Database · checked Sep 2, 2026
15	Socialonce Marketing&internet	Indirect evidence	Zaragoza, Spain	11-50	15 contacts →
	Indirect evidence “Somos un equipo de profesionales, técnicos en informática, programadores de software, diseñadores web y técnicos en posicionamiento SEO y marketing Online con amplia experiencia…” Source: RevenueBase Database · checked Sep 2, 2026
16	Overalia	Partial evidence	San Sebastian, Spain	11-50	14 contacts →
	Partial evidence “Overalia is a digital marketing agency, with experience in web development since 1996 and a pioneer in the fields of search engine marketing, web analytics and online reputation.” Source: RevenueBase Database · checked Sep 2, 2026
17	Estudio34	Indirect evidence	Barcelona, Spain	11-50	13 contacts →
	Indirect evidence “Estudio34 is an online marketing agency based in Barcelona (Spain) that provides digital marketing services to businesses that either need to improve their online visibility or…” Source: RevenueBase Database · checked Sep 2, 2026
18	Optimanova Solutions	Indirect evidence	Puerto De La Cruz, Spain	11-50	12 contacts →
	Indirect evidence “In Optimanova we understand Web Optimisation as a way to take the best advantage from your website.” Source: RevenueBase Database · checked Sep 2, 2026
19	Palo Seco	Indirect evidence	Barcelona, Spain	11-50	12 contacts →
	Indirect evidence “With roots and inspiration in Barcelona's iconic Pueblo Seco, Palo Seco is a digital marketing agency that empowers businesses like yours to achieve their online goals.” Source: RevenueBase Database · checked Sep 2, 2026
20	Sedigital	Indirect evidence	Madrid, Spain	11-50	12 contacts →
	Indirect evidence “SeDigital es una Agencia de Marketing Digital localizada en Madrid que presta sus servicios de SEO y SEM - PPC a otras empresas del ámbito nacional.” Source: RevenueBase Database · checked Sep 2, 2026
21	Lacomunicación	Indirect evidence	Quart De Poblet, Spain	11-50	9 contacts →
	Indirect evidence “Lacomunicación es una agencia de Marketing Digital en Valencia pionera en la consultoría SEO y el marketing digital, servicios que llevamos prestando desde 2004.” Source: RevenueBase Database · checked Sep 2, 2026
22	Rex4media	Indirect evidence	Pollensa, Spain	11-50	8 contacts →
	Indirect evidence “Rex4media es tu Boutique Marketing Agency en Mallorca.” Source: RevenueBase Database · checked Sep 2, 2026
23	Santaconcha Digital Performance	Indirect evidence	Granollers, Spain	11-50	8 contacts →
	Indirect evidence “Somos el Equipo A, un grupo de especialistas apasionados por el desarrollo web y el marketing digital, entrenados para llevar tu presencia digital a otro nivel y obsesionados con…” Source: RevenueBase Database · checked Sep 2, 2026
24	Creatiklab	Indirect evidence	Sant Adria De Besos, Spain	11-50	5 contacts →
	Indirect evidence “Creatiklab es una agencia de marketing digital, SEO y Google Ads con sede en Barcelona.” Source: RevenueBase Database · checked Sep 2, 2026
25	Kala Agency	Indirect evidence	Madrid, Spain	11-50	3 contacts →
	Indirect evidence “Fundada por nativos digitales, Kala Agency se especializa en optimización SEO, diseño web, SEM para emprendedores y marcas listos para crear su voz digital.” Source: RevenueBase Database · checked Sep 2, 2026

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: answer engine optimization companies. 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 answer engine optimization companies.
Partial evidence: Its own public description names part of answer engine optimization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name answer engine optimization companies. 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 903 answer engine optimization companies based in Spain

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Answer engine optimization companies based in Spain at a glance

As of Sep 2, 2026

14.5%Verified-email coverage

3.3%Mobile-number coverage

3.9Average contacts per company

1-10Median size (employees)

18.7%Largest-city concentration · Madrid

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

782

11-50

104

51-200

201-500

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 answer engine optimization companies, 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 “answer engine optimization companies”. 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 answer engine optimization companies), 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 answer engine optimization companies, 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, 516 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 2, 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.

Answer engine optimization companies by metro

Answer engine optimization companies in Madrid169
Answer engine optimization companies in Barcelona111
Answer engine optimization companies in Valencia38

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its 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 the category the list is about. Each row is rated strong evidence when the company's own description names answer engine optimization companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many answer engine optimization companies are there based in Spain?

RevenueBase identified 903 answer engine optimization companies headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Bigseo, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most answer engine optimization companies?

Madrid leads with 169 headquartered companies, followed by Barcelona (111) and Valencia (38).

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 516 verified decision-maker contacts tracked across these 903 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 2, 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 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.