What powers 
cefca.es?
Last seen Aug 2026 · 5 technologies across 5 categories
Analytics
Google Analytics
since Sep 2020
JavaScript libraries
Programming languages
PHP
since Sep 2021
UI frameworks
Bootstrap
since Sep 2020
Web servers
Apache HTTP Server
since Sep 2020
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 63% phone
- 37% desktop
France
Spain
Italy
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.72 / 10 · ranked #299,804 of all domains
92 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 1.9 MB · 37 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Centro de Estudios de Física del Cosmos de Aragón
- Founded: 2008
- Country: Spain
From Wikidata (CC0).
Infrastructure
- Hosted on REDIRIS RedIRIS Autonomous System (193.146.122.37)
- DNS: cefca.es
- Email: rediris.es
- Email security: SPF (soft fail), DMARC quarantine
- SSL: HARICA, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 2,259,536, 9 hosts
- Verified with: Cisco
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| oajweb.cefca.es | 5 |
| www.cefca.es | 5 |
| archive.cefca.es | 3 |