What powers polku.jp?
Last seen Aug 2026 · 17 technologies across 11 categories
Analytics
Google Analytics
since Jul 2019
CDN
cdnjs
since Jul 2025
Cloudflare
since Jul 2025
Google Hosted Libraries
since Feb 2022
Unpkg
since Jun 2023
CMS
WordPress
since Aug 2019
Databases
MySQL
since Aug 2019
Font scripts
Google Font API
since Jul 2025
Hosting
Sakura Internet
since Aug 2022
JavaScript libraries
Programming languages
PHP
since Aug 2019
UI frameworks
Web servers
Nginx
since Jul 2019
Widgets
SnapWidget
since Feb 2022
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
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.80 / 10 · ranked #4,371,124 of all domains
6 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 15.1 MB · 118 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Sakura Internet (133.242.249.32)
- Email: no MX record returned
- Email security: SPF (soft fail)
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 19,080,163, 2 hosts
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.polku.jp | 12 |
| polku.jp | 11 |
Full technology history →
Report an incorrect detection
Recent changes
- detected core-js Jul 2026
- detected Facebook Pixel Jul 2026