What powers kotaro-oshio.com?
Last seen Sep 2026 · 6 technologies across 6 categories
Analytics
JavaScript libraries
Miscellaneous
SWFObject
since Jan 2019
Operating systems
UNIX
since Jan 2019
Programming languages
Web servers
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 79% phone
- 21% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.18 / 10 · ranked #1,294,819 of all domains
60 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 275 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 3.3 MB · 81 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on OPTAGE OPTAGE Inc. (58.191.153.53)
- DNS: kk-ca.net
- Email: mail-servers.org
- Email security: SPF (soft fail), no DMARC record, CAA
- SSL: Sectigo, RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 740,670, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted