What powers 
tetsuji.jp?
Last seen Aug 2026 · 20 technologies across 16 categories
Advertising
Amazon Advertising
since Jun 2021
Twitter Ads
since Jul 2021
Analytics
CDN
Cloudflare
since Mar 2025
CMS
Databases
MySQL
since Aug 2018
Font scripts
JavaScript libraries
Miscellaneous
Operating systems
Debian
since Aug 2018
Page builders
WordPress Block Editor
since Jul 2024
Programming languages
PHP
since Aug 2018
Security
Cloudflare Bot Management
since Mar 2025
Web servers
Widgets
Twitter
since Aug 2018
WordPress plugins
Jetpack
since Apr 2022
WordPress themes
Twenty Twelve
since Apr 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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
3.90 / 10 · ranked #651,486 of all domains
31 referring domains · OpenPageRank
Infrastructure
- Hosted on Sakura Internet (153.126.134.111)
- DNS: Cloudflare DNS
- Email: tetsuji.jp
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 6,959,996, 6 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Cloudflare Apr 2026
- detected Cloudflare Bot Management Apr 2026