What powers forum21.jp?
Last seen Feb 2026 · 9 technologies across 8 categories
CDN
Google Hosted Libraries
since Aug 2022
CMS
WordPress
since Aug 2022
Databases
MySQL
since Aug 2022
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
RSS
since Jan 2023
Programming languages
PHP
since Aug 2022
Security
HSTS
since Jan 2023
Web servers
Apache HTTP Server
since Aug 2022
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
4.70 / 10 · ranked #317,625 of all domains
242 referring domains · OpenPageRank
Infrastructure
- Hosted on DIGIROCK DigiRock, Inc. (202.172.25.21)
- DNS: Onamae.com
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 739,589, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted