What powers 
rsef.es?
Last seen Aug 2026 · 45 technologies across 22 categories
Analytics
Caching
CDN
CMS
Databases
Font scripts
JavaScript graphics
JavaScript libraries
Marketing automation
Miscellaneous
PaaS
Page builders
Performance
Programming languages
Security
Tag managers
UI frameworks
Video players
Web servers
WordPress plugins
WordPress themes
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 * added to robots.txt
- Sep 2026 * removed from robots.txt
- Sep 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 57% desktop
- 43% phone
Spain
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.74 / 10 · ranked #286,517 of all domains
121 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Spanish
- Weight: 4.3 MB · 131 requests
- WordPress theme: beakai · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Real Sociedad Española de Física (Royal Spanish Society of Physics on Wikidata)
- Founded: 1980
- Industry: Education (declares
EducationalOrganization) - Country: Spain
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on OVHcloud (37.59.29.170)
- DNS: webempresa.eu
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 78,885, 4 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| rsef.es | 32 |
| estudiantes.rsef.es | 17 |
| form.rsef.es | 11 |
Full technology history →
Report an incorrect detection
Recent changes
- detected HSTS Jun 2026
- dropped Elementor Header & Footer Builder May 2026
- dropped Swiper May 2026
- dropped Underscore.js May 2026
- dropped Facebook Login Mar 2026
- dropped Joomla Mar 2026
- dropped K2 Mar 2026
- dropped MediaElement.js Mar 2026
- dropped MooTools Mar 2026
- dropped Nginx Mar 2026
- dropped Twitter Ads Mar 2026
- dropped UIKit Mar 2026
- detected WordPress Super Cache Mar 2026
- detected Animate.css Feb 2026
- detected Apache HTTP Server Feb 2026
- detected Contact Form 7 Feb 2026
- detected core-js Feb 2026
- detected Download Monitor Feb 2026
- detected Elementor Feb 2026
- detected Elementor Header & Footer Builder Feb 2026
- detected Isotope Feb 2026
- detected jQuery UI Feb 2026
- detected MetaSlider Feb 2026
- detected metisMenu Feb 2026
- detected MySQL Feb 2026
- detected OWL Carousel Feb 2026
- detected Popper Feb 2026
- detected Priority Hints Feb 2026
- detected Really Simple SSL & Security Feb 2026
- detected Site Kit Feb 2026
- detected Slick Feb 2026
- detected Swiper Feb 2026
- detected The Events Calendar Feb 2026
- detected Twitter Emoji (Twemoji) Feb 2026
- detected Underscore.js Feb 2026
- detected WordPress Feb 2026
- detected Yoast SEO Feb 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025
- detected MathJax Oct 2025