What powers seltas.edu.hk?
Last seen Oct 2026 · 17 technologies across 13 categories
Analytics
Google Analytics
since Oct 2022
CDN
Cloudflare
since Sep 2026
jQuery CDN
since Oct 2022
JavaScript frameworks
JavaScript graphics
Chart.js
since Oct 2022
JavaScript libraries
Miscellaneous
Popper
since Oct 2022
Operating systems
CentOS
since Oct 2022
Photo galleries
PhotoSwipe
since Oct 2022
Programming languages
UI frameworks
MDBootstrap
since Oct 2022
Web server extensions
Web servers
Webmail
Google Workspace
since Oct 2022
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
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
Hong Kong SAR China
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.28 / 10 · ranked #52,873,544 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 1.6 MB · 34 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.21.90.179, IPv6)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: no SPF record, DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Jan 2027
- Common Crawl link graph: rank 19,284,831, 4 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.seltas.edu.hk | 17 |
| seltas.edu.hk | 16 |