What powers f51.co.uk?
Last seen Oct 2026 · 20 technologies across 13 categories
Analytics
Google Analytics
since May 2022
CDN
Amazon S3
since Apr 2025
cdnjs
since May 2022
Cloudflare
since May 2022
Google Hosted Libraries
since May 2022
StackPath
since May 2022
MailChimp
since Sep 2024
Font scripts
Google Font API
since May 2022
JavaScript frameworks
JavaScript libraries
Maps
Google Maps
since May 2022
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Apr 2025
Programming languages
Tag managers
Google Tag Manager
since May 2022
Web servers
Apache HTTP Server
since May 2022
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
United Kingdom
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.34 / 10 · ranked #2,796,258 of all domains
20 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 100 ms |
| CLS | 0.1 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 5.6 MB · 58 requests
- Structured data: Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on 20i (185.151.30.162, IPv6)
- DNS: stackdns.com
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Dec 2026
- Common Crawl link graph: rank 2,521,087, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| f51.co.uk | 20 |
| www.f51.co.uk | 20 |
Full technology history →
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Recent changes
- dropped Vimeo Jun 2026
- dropped Cloudflare Bot Management May 2026