What powers proficiency.jp?
Last seen Sep 2026 · 11 technologies across 10 categories
CMS
Databases
MySQL
since Aug 2022
Font scripts
Google Font API
since Aug 2022
JavaScript libraries
Miscellaneous
RSS
since Feb 2023
Programming languages
UI frameworks
Pure CSS
since Sep 2026
Web servers
Apache HTTP Server
since Aug 2022
WordPress plugins
WordPress themes
Themonic Iconic One
since Aug 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
1.69 / 10 · ranked #5,051,153 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 0.1 MB · 21 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on GMO Internet (157.7.189.209)
- Email: no MX record returned
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 12,282,661, 4 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted