What powers suro.cz?
Last seen Aug 2026 · 8 technologies across 8 categories
CMS
Hosting
JavaScript libraries
Miscellaneous
Programming languages
Security
UI frameworks
Web servers
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| sujb | #3 | 3 |
| nrpi | #43 | 1 |
| nrpi | #29 | 1 |
| what causes radon in a house | #94 | 0 |
| where does radon come from in a house | #71 | 0 |
| when was radon discovered | #35 | 0 |
| radioactivity of water | #66 | 0 |
| radon sources in home | #75 | 0 |
| radon origin | #20 | 0 |
| radon discovery | #48 | 0 |
| removing uranium from water | #55 | 0 |
| origin of radon | #23 | 0 |
| history of radon | #22 | 0 |
| how does radon get into the house | #68 | 0 |
| how does radon gas get into houses | #95 | 0 |
| how does radon gas get into homes | #82 | 0 |
| how does radon enter a house | #37 | 0 |
| how can radon enter a home | #47 | 0 |
| how radon enters a house | #50 | 0 |
| how was radon discovered | #37 | 0 |
| discovery of radon | #37 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 57% phone
- 43% desktop
Czechia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.30 / 10 · ranked #201,670 of all domains
111 referring domains · OpenPageRank
Search traffic
5 est. monthly organic visits (US)
21 keywords in Google's top 30
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Czech
- Weight: 0.1 MB · 72 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- National Radiation Protection Institute
- Country: Czech Republic
From Wikidata (CC0).
Infrastructure
- Hosted on VODAFONE-CZ-AS (80.95.119.147, IPv6)
- DNS: erc-cr.cz
- Email: suro.cz
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 1,917,271, 5 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| rmu.suro.cz | 8 |
| www.suro.cz | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Matomo Analytics May 2026