What powers 3ko.co.jp?
Last seen Oct 2026 · 17 technologies across 9 categories
Analytics
Google Analytics
since Oct 2020
CDN
JavaScript frameworks
JavaScript libraries
Marketing automation
BowNow
since Oct 2022
Miscellaneous
Open Graph
since Sep 2022
Programming languages
Tag managers
Google Tag Manager
since Oct 2020
Web servers
Apache HTTP Server
since Oct 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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.10 / 10 · ranked #3,342,455 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| CLS | 0 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 3.8 MB · 54 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on CPI-NET KDDI Web Communications Inc. (158.199.228.72)
- DNS: alpha-prm.jp
- Email: alpha-prm.jp
- Email security: SPF (soft fail), DMARC monitor only
- SSL: DigiCert, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 9,903,969, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted