What powers 4c16.dev?
Last seen Oct 2026 · 9 technologies across 7 categories
JavaScript libraries
Miscellaneous
HTTP/3
since Dec 2024
Performance
Turbolinks
since Dec 2024
Programming languages
Security
HSTS
since Dec 2024
Web frameworks
Ruby on Rails
since Dec 2024
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
- Sep 2026 robots.txt removed
AI Crawlers
No robots.txt, all AI crawlers allowed
Open Page Rank
0.26 / 10 · ranked #67,009,554 of all domains
0 referring domains · OpenPageRank
Page
- Language: English
- Weight: 2.1 MB · 10 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Microsoft (20.82.180.241)
- DNS: Namecheap
- Email: Namecheap
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 22,954,522
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted