What powers zenjikyo.jp?
Last seen Aug 2026 · 15 technologies across 12 categories
Analytics
Google Analytics
since Jul 2021
CMS
Databases
MySQL
since Jul 2021
Font scripts
Twitter Emoji (Twemoji)
since Jul 2021
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
Programming languages
PHP
since Jul 2021
Security
HSTS
since Sep 2022
UI frameworks
Web servers
Apache HTTP Server
since Jul 2021
WordPress plugins
WordPress themes
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
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.82 / 10 · ranked #4,257,134 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 8.8 MB · 37 requests
- WordPress theme: lightning (child: lightning-child) · all themes
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Sakura Internet (153.127.198.169)
- DNS: alpha-prm.jp
- Email: alpha-prm.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 38,822,059
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Babel Apr 2026