What powers seoulforeign.org?
Last seen Sep 2026 · 48 technologies across 23 categories
Analytics
Caching
CDN
CMS
Cookie compliance
Databases
Ecommerce
Editors
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Load balancers
Miscellaneous
PaaS
Payment processors
Performance
Programming languages
Security
Tag managers
UI frameworks
Video players
Webmail
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 Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 67% desktop
- 33% phone
South Korea
United States
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.03 / 10 · ranked #1,539,755 of all domains
39 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 75 ms |
| CLS | 0.2 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 7.9 MB · 94 requests
- Structured data: JSON-LD, Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Seoul Foreign School
- Founded: 1912
- Industry: Education (declares
EducationalOrganization) - Country: South Korea
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (104.17.71.73)
- Email: no MX record returned, SPF names Google Workspace
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 151,416, 7 hosts
- Verified with: Apple Business, Google, Microsoft 365
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.seoulforeign.org | 27 |
| www.tickets.seoulforeign.org | 14 |
| tickets.seoulforeign.org | 13 |
| apps.seoulforeign.org | 7 |
| theatreoffice.seoulforeign.org | 7 |
Full technology history →
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Recent changes
- detected VideoJS May 2026
- dropped Google Sites Apr 2026
- detected Stimulus Mar 2026
- detected Htmx Nov 2025