What powers 
gcc.co.jp?
Last seen Aug 2026 · 8 technologies across 7 categories
Analytics
JavaScript libraries
Marketing automation
Miscellaneous
Performance
Tag managers
Web servers
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
AI Crawlers
No AI crawlers blocked
Audience
- 61% desktop
- 39% phone
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.08 / 10 · ranked #519,297 of all domains
49 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 9.9 MB · 93 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on PROX Prox System Design Inc. (210.143.104.5)
- DNS: d-53.info
- Email: no MX record returned
- Email security: DNSSEC signed
- SSL: GlobalSign, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 6,728,247, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- dropped core-js Nov 2025