What powers 
iacs.org.uk?
Last seen Sep 2026 · 19 technologies across 12 categories
Analytics
CDN
Comment systems
JavaScript frameworks
JavaScript libraries
Maps
Miscellaneous
Programming languages
Security
Tag managers
UI frameworks
Webmail
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
- Sep 2026 * removed from robots.txt
- Sep 2026 amazonbot removed from robots.txt
- Sep 2026 applebot-extended removed from robots.txt
- Sep 2026 meta-externalagent removed from robots.txt
- Sep 2026 bytespider removed from robots.txt
- Sep 2026 ccbot removed from robots.txt
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| iacs | #2 | 470 |
| classification society | #4 | 58 |
| iacs classification | #1 | 15 |
| iacs membership | #1 | 12 |
| international association of classification societies | #1 | 11 |
| ship classification societies | #3 | 9 |
| classification societies | #2 | 8 |
| iacs class societies | #2 | 5 |
| international association of classification societies | #3 | 4 |
| iacs class society | #3 | 3 |
| class 1c | #51 | 2 |
| classification society maritime | #8 | 2 |
| classification society | #34 | 2 |
| ship classification | #32 | 2 |
| iacs jobs | #5 | 2 |
| 161/180 | #11 | 2 |
| china classification | #18 | 1 |
| ur w | #9 | 1 |
| vessel class | #25 | 1 |
| procedural requirement | #7 | 1 |
| iacs standards | #7 | 1 |
| z29 | #26 | 0 |
| ccc-10 | #11 | 0 |
| class society | #90 | 0 |
| class database | #52 | 0 |
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
- 70% desktop
- 30% phone
India
Indonesia
United Kingdom
United States
Türkiye
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.97 / 10 · ranked #111,681 of all domains
246 referring domains · OpenPageRank
Search traffic
610 est. monthly organic visits (US)
77 keywords in Google's top 30
Core Web Vitals
| LCP | 4 s |
| INP | 50 ms |
| CLS | 0.1 |
| TTFB | 2700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 7.7 MB · 142 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- International Association of Classification Societies
- Founded: 1968
From Wikidata (CC0).
Infrastructure
- Registered Aug 1995 (31 years) via Fasthosts Internet Ltd, renews Aug 2027
- Hosted on Cloudflare (104.26.4.195, IPv6)
- DNS: Cloudflare DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 490,972, 3 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| iacs.org.uk | 17 |
| www.iacs.org.uk | 5 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Leaflet Apr 2026
- detected Livefyre Apr 2026
- dropped Nginx Jan 2026
- detected Cloudflare Browser Insights Dec 2025
- detected HTTP/3 Dec 2025