What powers prosym.org?
Last seen Oct 2026 · 5 technologies across 5 categories
Caching
Varnish
since Dec 2022
CDN
Fastly
since Dec 2022
Hosting
Sakura Internet
since Dec 2022
Miscellaneous
Open Graph
since Dec 2022
PaaS
GitHub Pages
since Dec 2022
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
2.57 / 10 · ranked #2,366,669 of all domains
12 referring domains · OpenPageRank
Page
- Language: Japanese
- CDN: Fastly
- Weight: 0.0 MB · 5 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Sakura Internet
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 49,466
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted