What powers esr.nhs.uk?
Last seen Jun 2026 · 36 technologies across 18 categories
Advertising
Twitter Ads
since Jul 2021
Analytics
Google Analytics
since Jun 2018
CDN
Cloudflare
since Mar 2025
Google Cloud CDN
since Jul 2023
CMS
Font scripts
Google Font API
since Jan 2019
IaaS
Google Cloud
since Jul 2023
JavaScript Frameworks
JavaScript libraries
Load balancers
Amazon ALB
since Jul 2023
Maps
Google Maps
since Jan 2019
Miscellaneous
Open Graph
since Sep 2023
Popper
since Apr 2022
PaaS
Amazon Web Services
since Aug 2022
Programming languages
Security
Cloudflare Bot Management
since Mar 2025
HSTS
since Sep 2022
UI frameworks
Web frameworks
Java Servlet
since Sep 2023
Web servers
Widgets
Twitter
since Apr 2018
Audience
- 70% phone
- 28% desktop
- 2% tablet
United Kingdom
Netherlands
Greece
Portugal
Egypt
Ireland
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.18 / 10 · ranked #463,039 of all domains
78 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English (United Kingdom)
- Weight: 1.9 MB · 67 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| discover.esr.nhs.uk | 19 |
| www.discover.esr.nhs.uk | 19 |
| my.esr.nhs.uk | 17 |
| www.esr.nhs.uk | 8 |
| servicedesk.esr.nhs.uk | 3 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Apr 2026
- detected Cloudflare Bot Management Apr 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025