What powers subf.dev?
Last seen Oct 2026 · 10 technologies across 9 categories
Analytics
Cloudflare Browser Insights
since Mar 2026
Caching
Varnish
since Apr 2025
CDN
Cloudflare
since Apr 2025
Fastly
since Apr 2025
Miscellaneous
HTTP/3
since Apr 2025
PaaS
GitHub Pages
since Apr 2025
Performance
Priority Hints
since Mar 2026
Security
HSTS
since Apr 2025
Static site generator
UI frameworks
UnoCSS
since Apr 2025
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.75 / 10 · ranked #274,522 of all domains
30 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English
- CDN: Cloudflare, Fastly
- Weight: 0.4 MB · 29 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Feb 2024 (2 years) via NameSilo, LLC, renews Feb 2027
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 8,887,339
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted