What powers 
rfid4u.com?
Last seen Oct 2026 · 31 technologies across 17 categories
Analytics
Caching
CDN
CMS
Databases
Font scripts
Hosting
JavaScript libraries
Load balancers
Miscellaneous
PaaS
Performance
Programming languages
Security
UI frameworks
Webmail
WordPress plugins
AI Crawlers
Does not block any of the 33 AI crawlers we track in its robots.txt. Checked Nov 2026.
Training crawlers
- CCBot Allowed
- ClaudeBot Allowed
- cohere-training-data-crawler Allowed
- Google-Extended Allowed
- GPTBot Allowed
- Webzio-Extended Allowed
Search and AI assistants
- PerplexityBot Allowed
User-request fetchers
- ChatGPT-User Allowed
The other 25 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt found
- ai.txt not found
Content Signals:
search=yes ai-train=yes ai-input=yes declared in robots.txt
AI Crawlers
No AI crawlers blocked
Standards: llms.txt, Content Signals
Audience
- 66% desktop
- 34% phone
India
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.76 / 10 · ranked #732,110 of all domains
49 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 25 ms |
| CLS | 0.1 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 2.7 MB · 103 requests
- WordPress theme: seolounge · all themes
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- RFID4U
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (160.153.0.147)
- DNS: GoDaddy DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 555,951, 3 hosts
- Verified with: Apple Business, Atlassian, Citrix
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
- detected Cloudflare Turnstile Oct 2026
- detected Google Analytics Oct 2026
- detected Microsoft Clarity Oct 2026
- dropped Cloudflare Turnstile Sep 2026
- dropped Google Analytics Sep 2026
- dropped Microsoft Clarity Sep 2026
- detected Amazon ALB Aug 2026
- detected Amazon Web Services Aug 2026
- detected Cloudflare Turnstile Jul 2026
- detected Google Analytics Jul 2026
- detected Microsoft Clarity Jul 2026
- dropped Cloudflare Turnstile Jun 2026
- dropped Google Analytics Jun 2026
- dropped Microsoft Clarity Jun 2026
- detected Apple iCloud Mail May 2026
- detected Akismet Apr 2026
- detected Cloudflare Turnstile Apr 2026
- detected Cookie Notice Apr 2026
- detected Google Analytics Apr 2026
- detected Microsoft Clarity Apr 2026
- detected Animate.css Mar 2026
- dropped Endurance Page Cache Mar 2026
- detected Font Awesome Mar 2026
- dropped HSTS Mar 2026
- dropped Akismet Jan 2026
- dropped Animate.css Jan 2026
- dropped Cloudflare Turnstile Jan 2026
- dropped Cookie Notice Jan 2026
- dropped Font Awesome Jan 2026
- dropped Google Analytics Jan 2026
- dropped Microsoft Clarity Jan 2026
- dropped vcita Dec 2025
- detected WP Rocket Dec 2025