What powers guy.dev?
Last seen Sep 2026 · 9 technologies across 8 categories
Caching
Varnish
since May 2025
CDN
Fastly
since May 2025
Miscellaneous
Open Graph
since Sep 2026
RSS
since May 2025
PaaS
GitHub Pages
since May 2025
Security
HSTS
since May 2025
Static site generator
Astro
since May 2025
UI frameworks
Tailwind CSS
since May 2025
Webmail
Proton Mail
since May 2025
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
1.86 / 10 · ranked #4,017,647 of all domains
9 referring domains · OpenPageRank
Infrastructure
- Hosted on Fastly (185.199.108.153, IPv6)
- DNS: Google Cloud DNS
- Email: Proton Mail
- Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 2,160,066
- Verified with: Proton
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted