What powers lfseoul.org?
Last seen Sep 2026 · 24 technologies across 18 categories
Analytics
Google Analytics
since Feb 2019
Caching
Litespeed Cache
since Aug 2021
CMS
Comment systems
Livefyre
since Jul 2021
Databases
MySQL
since Feb 2019
Font scripts
Google Font API
since Oct 2016
Twitter Emoji (Twemoji)
since Jul 2021
JavaScript libraries
Maps
Leaflet
since Jul 2021
Miscellaneous
PaaS
OVHcloud
since Sep 2026
Programming languages
Retargeting
Google Remarketing Tag
since Jul 2021
Security
HSTS
since Sep 2026
Tag managers
Google Tag Manager
since Feb 2019
UI frameworks
Animate.css
since Jul 2021
Video players
YouTube
since Jul 2021
Web servers
LiteSpeed
since Jul 2021
Webmail
Google Workspace
since Sep 2026
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
- 100% desktop
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.23 / 10 · ranked #3,037,036 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Organisation
- French School of Seoul
- Country: South Korea
From Wikidata (CC0).
Infrastructure
- Hosted on Hetzner (5.161.62.195)
- DNS: OVHcloud
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 13,184,465, 2 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.lfseoul.org | 18 |
| lfseoul.org | 17 |
| ad-fs-auth.lfseoul.org | 4 |