What powers radicale.org?
Last seen Oct 2026 · 4 technologies across 4 categories
Caching
CDN
Miscellaneous
PaaS
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| icalendar login | #49 | 2 |
| calendar server | #9 | 1 |
| caldav server | #10 | 1 |
| radical documents | #18 | 0 |
| radical website | #28 | 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 robots.txt, all AI crawlers allowed
Audience
- 66% desktop
- 34% phone
Germany
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
6.13 / 10 · ranked #101,156 of all domains
225 referring domains · OpenPageRank
Search traffic
4 est. monthly organic visits (US)
5 keywords in Google's top 30
Core Web Vitals
| LCP | 0.8 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Fastly
- Weight: 0.0 MB · 12 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Feb 2009 (17 years) via Scaleway SAS, renews Feb 2027
- Hosted on Fastly (185.199.108.153, IPv6)
- DNS: lebureau.coop
- Email: Gandi
- Email security: SPF (neutral), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 498,212, 2 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted