What powers crfr.us?
Last seen Aug 2026 · 22 technologies across 14 categories
Analytics
Ahoy
since Mar 2024
CDN
Font scripts
Google Font API
since Mar 2024
Hosting
GoDaddy
since Mar 2024
JavaScript frameworks
React
since Jul 2025
JavaScript libraries
Miscellaneous
Open Graph
since Mar 2024
Programming languages
RUM
New Relic
since Mar 2024
Security
UI frameworks
Pure CSS
since Jul 2025
Web frameworks
Ruby on Rails
since Mar 2024
Web servers
Nginx
since Mar 2024
Webmail
Apple iCloud Mail
since Aug 2025
Microsoft 365
since Mar 2024
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Aug 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
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.69 / 10 · ranked #5,006,693 of all domains
9 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 12.0 MB · 113 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.