What powers coulsdon.ac.uk?
Last seen Oct 2026 · 38 technologies across 23 categories
Advertising
CDN
CMS
Cookie compliance
Databases
Documentation
Font scripts
JavaScript Frameworks
JavaScript Libraries
LMS
Load balancers
Miscellaneous
Operating Systems
PaaS
Page builders
Performance
Programming languages
Security
Tag managers
Web Application Frameworks
Web Servers
Webmail
WordPress plugins
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
- 69% phone
- 31% desktop
United Kingdom
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.17 / 10 · ranked #3,159,334 of all domains
13 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United Kingdom)
- Weight: 14.7 MB · 77 requests
- WordPress theme: c4 · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Coulsdon Sixth Form College
- Industry: Education (declares
CollegeOrUniversity) - Country: United Kingdom
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on UKNOC-AS (5.134.10.167)
- DNS: croydon.ac.uk
- Email: Broadcom MessageLabs
- Email security: SPF (soft fail), DMARC reject
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 700,115, 6 hosts
- Verified with: Adobe, Apple Business, Autodesk, Google, Meta Business, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| coulsdon.ac.uk | 31 |
| moodle.coulsdon.ac.uk | 9 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Amazon ALB Oct 2026
- detected Amazon Web Services Oct 2026
- detected React Oct 2026
- detected Zendesk Oct 2026
- dropped Amazon ALB Sep 2026
- dropped Amazon Web Services Sep 2026
- dropped Contact Form 7 Sep 2026
- dropped core-js Sep 2026
- dropped Divi Sep 2026
- dropped Google Font API Sep 2026
- dropped jQuery Migrate Sep 2026
- dropped jQuery Mobile Sep 2026
- dropped jQuery UI Sep 2026
- dropped jsDelivr Sep 2026
- dropped MediaElement.js Sep 2026
- dropped Nginx Sep 2026
- dropped Osano Sep 2026
- dropped React Sep 2026
- dropped reCAPTCHA Sep 2026
- dropped RSS Sep 2026
- dropped Twitter Emoji (Twemoji) Sep 2026
- dropped WP Engine Sep 2026
- dropped Zendesk Sep 2026
- detected Cloudflare Bot Management Aug 2026
- detected FancyBox Aug 2026
- detected Font Awesome Aug 2026
- detected HSTS Aug 2026
- detected HTTP/3 Aug 2026
- detected LiteSpeed Aug 2026
- detected Litespeed Cache Aug 2026
- detected Microsoft Advertising Aug 2026
- detected OWL Carousel Aug 2026
- detected Perfmatters Aug 2026
- detected PWA Aug 2026
- detected Stackable Aug 2026
- detected The Events Calendar Aug 2026
- detected Typekit Aug 2026
- detected WordPress Block Editor Aug 2026
- detected Twitter Emoji (Twemoji) Mar 2026