What powers 
koubundou.co.jp?
Last seen Aug 2026 · 12 technologies across 10 categories
Analytics
Ecommerce
Font scripts
JavaScript Frameworks
JavaScript libraries
Miscellaneous
Programming languages
Web frameworks
Web servers
Webmail
AI Crawlers
Blocks 10 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
- Applebot Blocked
- Claude-SearchBot Blocked
- OAI-SearchBot Blocked
- PetalBot Blocked
The other 23 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
10 of 33 AI crawlers blocked
Audience
- 53% phone
- 45% desktop
- 2% tablet
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.83 / 10 · ranked #125,398 of all domains
165 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 5.2 MB · 67 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Kōbundō
- Country: Japan
From Wikidata (CC0).
Infrastructure
- Hosted on SO-NET Sony Network Communications Inc. (182.169.74.66)
- DNS: ocn.ad.jp
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Nijimo, Inc., RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 76,202, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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