What powers ona-book.org?
Last seen Sep 2026 · 16 technologies across 10 categories
Analytics
Google Analytics
since Oct 2021
Caching
Varnish
since Oct 2021
CDN
Font scripts
Font Awesome
since Oct 2021
JavaScript graphics
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Aug 2022
GitHub Pages
since Oct 2021
Security
HSTS
since Sep 2022
UI frameworks
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
AI Crawlers
No robots.txt, all AI crawlers allowed
Open Page Rank
1.81 / 10 · ranked #4,276,199 of all domains
7 referring domains · OpenPageRank
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Amazon Route 53
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 2,057,093
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted