What powers penguin-pgn.co.jp?
Last seen Sep 2026 · 20 technologies across 13 categories
A/B Testing
Analytics
CDN
CMS
Databases
Font scripts
JavaScript libraries
Miscellaneous
Programming languages
Security
Tag managers
Web servers
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 Oct 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 72% phone
- 28% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.17 / 10 · ranked #3,174,442 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 2.3 MB · 86 requests
- WordPress theme: penguin_theme · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- 株式会社ペンギンライター
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on CPI-NET KDDI Web Communications Inc. (194.91.14.244)
- DNS: cpi.ad.jp
- Email: secure.ne.jp
- Email security: SPF (hard fail), DMARC monitor only
- SSL: JPRS, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 10,650,559
DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped All in One SEO Jul 2026
- detected Yoast SEO Jul 2026
- detected Twitter Emoji (Twemoji) Jan 2026