What powers 
subbrit.org.uk?
Last seen Sep 2026 · 10 technologies across 7 categories
CDN
JavaScript frameworks
JavaScript libraries
PaaS
Static site generator
UI frameworks
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| south kensington tube | #4 | 130 |
| churchill war rooms | #85 | 57 |
| south kensington station london | #7 | 49 |
| raf upper heyford | #3 | 38 |
| south kensington tube station | #8 | 37 |
| royal observer corps map | #1 | 33 |
| east german secret police | #7 | 33 |
| nuclear bomb shelter near me | #49 | 31 |
| nuclear fallout shelter near me | #58 | 23 |
| tower hill tube station | #9 | 20 |
| stasi germany | #8 | 20 |
| bunkers in uk | #1 | 15 |
| rnad | #3 | 14 |
| observer corps | #4 | 14 |
| heligoland | #43 | 14 |
| trafalgar square station | #2 | 11 |
| st clement basilica rome | #39 | 11 |
| stasi police | #6 | 11 |
| bunker map | #4 | 9 |
| royal observer corps posts | #1 | 9 |
| subterranea magazine | #1 | 9 |
| fort driant today | #1 | 9 |
| fort driant today | #1 | 9 |
| fort driant today | #1 | 9 |
| fort driant | #6 | 9 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 79% phone
- 16% desktop
- 5% tablet
United Kingdom
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.29 / 10 · ranked #208,123 of all domains
229 referring domains · OpenPageRank
Search traffic
980 est. monthly organic visits (US)
735 keywords in Google's top 30
Core Web Vitals
| LCP | 0.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Amazon CloudFront
- Weight: 1.8 MB · 27 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Subterranea Britannica
- Founded: 1974
- Country: United Kingdom
From Wikidata (CC0).
Infrastructure
- Registered Apr 2000 (26 years) via Gandi, renews Apr 2027
- Hosted on Amazon Web Services (3.5.64.47)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: SPF (hard fail), no DMARC record
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 526,948, 6 hosts
- Verified with: Google, Meta Business
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted