What powers retro-biz.com?
Last seen Sep 2026 · 14 technologies across 9 categories
Ecommerce
Font scripts
Hosting
JavaScript frameworks
Miscellaneous
Operating systems
Programming languages
UI frameworks
Web servers
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Search and AI assistants
- PetalBot Blocked
The other 32 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
1 of 33 AI crawlers blocked
Audience
- 75% phone
- 25% desktop
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.33 / 10 · ranked #1,086,214 of all domains
46 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- Weight: 6.4 MB · 110 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Sakura Internet (133.242.205.146)
- DNS: Sakura Internet
- Email: no MX record returned
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 4096, expires Oct 2026
- Common Crawl link graph: rank 6,903,914, 3 hosts
- Verified with: Google
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| thoth.retro-biz.com | 12 |
| store.retro-biz.com | 10 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped jQuery May 2026
- dropped PayPal May 2026
- dropped PHP May 2026
- detected Google Font API Apr 2026