What powers 
rf-explorer.com?
Last seen Sep 2026 · 13 technologies across 9 categories
CDN
CMS
Font scripts
Miscellaneous
Programming languages
Search engines
Security
UI frameworks
Web frameworks
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 75% desktop
- 25% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.86 / 10 · ranked #682,058 of all domains
59 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Sucuri Firewall
- Weight: 0.6 MB · 28 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- RF Explorer Spectrum Analyzers and Tools
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Cloudflare (104.21.9.246, IPv6)
- Email: no MX record returned
- Email security: DNSSEC signed
- SSL: GoDaddy, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 7,954,681, 8 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped Google Analytics Aug 2026
- dropped jQuery Aug 2026
- detected Google Analytics Jun 2026
- detected jQuery Jun 2026
- detected HSTS Apr 2026
- dropped Mailjet Apr 2026
- detected Open Graph Apr 2026
- dropped Google Analytics Mar 2026
- dropped jQuery Mar 2026
- detected Google Analytics Nov 2025
- detected jQuery Nov 2025