What powers 
gkren.jp?
Last seen Aug 2026 · 3 technologies across 3 categories
Analytics
Google Analytics
since Jun 2020
JavaScript libraries
Web servers
Apache HTTP Server
since Jun 2020
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 *: Restricted (was Allowed)
- Sep 2026 robots.txt appeared
- Sep 2026 * added to robots.txt
AI Crawlers
No AI crawlers blocked
Audience
- 65% desktop
- 35% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.82 / 10 · ranked #707,889 of all domains
42 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 225 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 0.8 MB · 63 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on MIRAI Mirai Communication Network Inc. (210.172.223.141, IPv6)
- DNS: mcnx.jp
- Email: s-advance.com
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 24,910,577, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted