What powers 666-class.com?
Last seen Jun 2026 · 14 technologies across 11 categories
Analytics
Naver Analytics
since Jun 2023
CDN
Google Cloud CDN
since Sep 2023
CMS
Wix
since Jun 2023
IaaS
Google Cloud
since Sep 2023
Issue trackers
Sentry
since Jun 2023
JavaScript frameworks
JavaScript libraries
Miscellaneous
Performance
Priority Hints
since Jun 2023
Security
HSTS
since Jun 2023
UI frameworks
Audience
South Korea
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.19 / 10 · ranked #3,124,278 of all domains
33 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Google
- Weight: 3.3 MB · 188 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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