What powers preken.jp?
Last seen Sep 2026 · 19 technologies across 16 categories
Advertising
Tapad
since Aug 2022
Analytics
Google Analytics
since Aug 2022
CMS
Databases
MySQL
since Aug 2022
Font scripts
Google Font API
since Aug 2022
Twitter Emoji (Twemoji)
since Aug 2022
Hosting panels
Plesk
since Aug 2022
JavaScript libraries
Miscellaneous
RSS
since Dec 2022
Page builders
WordPress Block Editor
since Jul 2024
Performance
Priority Hints
since Jul 2024
Programming languages
Security
Really Simple SSL & Security
since Apr 2024
Tag managers
Google Tag Manager
since Aug 2022
UI frameworks
Web servers
Nginx
since Aug 2022
WordPress themes
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 53% phone
- 47% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.97 / 10 · ranked #3,663,877 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 5.4 MB · 199 requests
- WordPress theme: lightning-pro · all themes
- Structured data: JSON-LD, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on GMOCL GMO GlobalSign Holdings K.K. (153.122.97.212)
- Email: no MX record returned
- SSL: Nijimo, Inc., RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 25,356,732
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Twitter Emoji (Twemoji) Dec 2025