What powers namazu.or.jp?
Last seen Sep 2026 · 21 technologies across 13 categories
Analytics
Google Analytics
since Jan 2019
CDN
Google Hosted Libraries
since Feb 2022
CMS
WordPress
since Jan 2019
Databases
MySQL
since Jan 2019
Font scripts
Google Font API
since Sep 2026
Twitter Emoji (Twemoji)
since Jan 2019
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2026
RSS
since Dec 2022
Programming languages
PHP
since Jan 2019
Security
reCAPTCHA
since Sep 2026
Video players
YouTube
since Sep 2026
Web servers
Nginx
since Jan 2019
WordPress plugins
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
Audience
- 56% desktop
- 44% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.24 / 10 · ranked #1,203,589 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 9.2 MB · 138 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Sakura Internet (59.106.27.217)
- DNS: Sakura Internet
- Email: no MX record returned
- Email security: SPF (soft fail)
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 16,891,082, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted