What powers 
castel.dev?
Last seen Oct 2026 · 10 technologies across 5 categories
Analytics
JavaScript frameworks
Miscellaneous
PaaS
Netlify
since May 2019
Security
HSTS
since Sep 2022
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
- 82% desktop
- 18% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.87 / 10 · ranked #676,529 of all domains
58 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Google
- Weight: 0.8 MB · 51 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Google Cloud (104.198.14.52)
- DNS: Namecheap
- Email: Namecheap Private Email
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 1,893,865
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted