Companies using IONOS in Spain
As of 4 November 2026, 2,410 Spanish companies show IONOS: 2,409 on their website or in DNS records and 1 in their own job postings, led by Madrid.
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
- Top city
- Madrid · 204
- In both sources
- 0
- Most common size
- 10,001+ employees
- Team that names it most
- Product, program & project management · 2 postings
- Top industry, posting companies
- Utilities & infrastructure
Spanish companies on IONOS
Every company in the country whose own postings name the tool; job boards and portals left out.
Open the sales or marketing leader at each one with a verified e-mail, or get new Spanish IONOS users every Monday.
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By city, company size, industry and team
Footprint tables first (website or DNS), then the companies whose postings name IONOS.
| companies | share | |
|---|---|---|
| Madrid | 204 | 8% |
| Barcelona | 95 | 4% |
| Valencia | 44 | 2% |
| Sevilla | 30 | 1% |
| Zaragoza | 28 | 1% |
| Malaga | 21 | 1% |
| Bilbao | 20 | 1% |
| Murcia | 19 | 1% |
| Santa Cruz De Tenerife | 15 | 1% |
| Sabadell | 13 | 1% |
| companies | share | |
|---|---|---|
| Self-employed | 936 | 39% |
| 2-10 employees | 908 | 38% |
| 11-50 employees | 395 | 16% |
| 51-200 employees | 111 | 5% |
| 201-500 employees | 26 | 1% |
| 501-1000 employees | 16 | 1% |
| 1001-5000 employees | 12 | 0% |
| 5001-10000 employees | 3 | 0% |
| 10,001+ employees | 2 | 0% |
| companies | share | |
|---|---|---|
| Madrid | 1 | 100% |
| companies | share | |
|---|---|---|
| 10,001+ employees | 1 | 100% |
| companies | share | |
|---|---|---|
| Utilities & infrastructure | 1 | 100% |
| postings · companies | |
|---|---|
| Product, program & project management | 2 · 2 |
IONOS everywhere, and other tools here
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Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
2,410 Spanish companies show IONOS: 2,409 carry it on their website or in their DNS records, 1 name it in their own job postings, 0 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/ionos/spain)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from the applicant tracking systems behind Spanish career sites. A tool counts when the employer's own text names it as the team's system.
- CountryFrom the company's own website: imprint, address, phone prefix and language, with a confidence score. Not the posting's location.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- ExclusionsJob boards, portals and aggregators are kept out of company lists.
IONOS in Spain: questions
Is this every Spanish company on IONOS?
It is every Spanish company whose website, DNS records or own job postings show it: 2,410 in total. Companies that use IONOS without any public trace are not counted.
What does "Spain" mean here?
The country of the company, from its own website (imprint, address, phone prefix, language), not where the posting is located. A German company hiring in Paris still counts as German.
How do I get the Spanish list with e-mails?
Sign up, filter companies on IONOS and Spain, and open the people you want. Counting is free; the first 1,000 results are too.
Get this list your way
The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.
Every Spanish company on IONOS,
with the person who owns it
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