What powers black-holes.org?
Last seen Jun 2026 · 9 technologies across 7 categories
Caching
Varnish
since Mar 2025
CDN
Font scripts
Google Font API
since Jan 2019
JavaScript graphics
Miscellaneous
PaaS
GitHub Pages
since Mar 2025
Webmail
Google Workspace
since Aug 2022
Audience
- 86% phone
- 14% desktop
India
Iran
Egypt
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.70 / 10 · ranked #311,703 of all domains
102 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.4 s |
| CLS | 0 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Fastly
- Weight: 1.5 MB · 55 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.black-holes.org | 8 |
| data.black-holes.org | 5 |
Full technology history →
Report an incorrect detection