What powers j-bdb.com?
Last seen Aug 2026 · 16 technologies across 10 categories
Advertising
Analytics
CDN
JavaScript frameworks
JavaScript libraries
Miscellaneous
Security
Tag managers
UI frameworks
Web servers
AI Crawlers
Blocks 10 of 33 AI crawlers we track by name in its robots.txt. Checked Aug 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
- PerplexityBot Blocked
The other 23 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
10 of 33 AI crawlers blocked
Audience
- 51% phone
- 49% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.36 / 10 · ranked #7,901,193 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 50 ms |
| CLS | 0.55 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- CDN: Cloudflare
- Weight: 1.2 MB · 50 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- DNS: Cloudflare DNS
- Email: no MX record returned
- Email security: DMARC reject
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 12,685,634, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted