What powers rccrawlers.net?
Last seen Oct 2026 · 21 technologies across 15 categories
Advertising
Affiliate programs
Analytics
Caching
CMS
Cookie compliance
Databases
JavaScript libraries
Miscellaneous
Performance
Programming languages
Security
Tag managers
Web servers
WordPress plugins
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 71% phone
- 27% desktop
- 3% tablet
Japan
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.55 / 10 · ranked #23,156,657 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 75 ms |
| CLS | 0.3 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Japanese
- Weight: 2.1 MB · 98 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Rock’n Crawler
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on GMO Internet (163.44.185.210)
- DNS: Muumuu Domain
- Email: Lolipop
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 13,343,287
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Google Font API Oct 2026
- dropped Amazon Associates Sep 2026
- detected HSTS Aug 2026
- detected Site Kit Apr 2026