What powers 4kjav.co?
Last seen May 2026 · 22 technologies across 14 categories
Advertising
Analytics
Cloudflare Browser Insights
since Nov 2025
CDN
Bunny
since Jan 2026
Cloudflare
since Aug 2022
CMS
Databases
MySQL
since Aug 2022
Font scripts
Bunny Fonts
since Jan 2026
Font Awesome
since Aug 2022
JavaScript libraries
Miscellaneous
Performance
Priority Hints
since Jul 2024
Programming languages
PHP
since Aug 2022
UI frameworks
Bootstrap
since Jan 2026
Video players
VideoJS
since Jun 2023
Web servers
Nginx
since Aug 2022
WordPress plugins
RankMath SEO
since May 2024
WP Rocket
since Aug 2022
Audience
South Korea
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.82 / 10 · ranked #16,117,981 of all domains
3 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.4 s |
| CLS | 0.15 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Jun 2026.
Subdomains
| Host | Techs |
|---|---|
| kr29.4kjav.co | 18 |
| kr32.4kjav.co | 17 |
| kr30.4kjav.co | 8 |
| kr27.4kjav.co | 3 |
| kr31.4kjav.co | 3 |
| kr9.4kjav.co | 3 |
| kr1.4kjav.co | 2 |
| kr10.4kjav.co | 2 |
| kr11.4kjav.co | 2 |
| kr12.4kjav.co | 2 |
| kr13.4kjav.co | 2 |
| kr14.4kjav.co | 2 |
| kr16.4kjav.co | 2 |
| kr17.4kjav.co | 2 |
| kr18.4kjav.co | 2 |
| kr19.4kjav.co | 2 |
| kr2.4kjav.co | 2 |
| kr20.4kjav.co | 2 |
| kr21.4kjav.co | 2 |
| kr22.4kjav.co | 2 |
| kr23.4kjav.co | 2 |
| kr24.4kjav.co | 2 |
| kr25.4kjav.co | 2 |
| kr26.4kjav.co | 2 |
Full technology history →
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Recent changes
- dropped JuicyAds Apr 2026
- dropped Redis Apr 2026
- dropped Redis Object Cache Apr 2026
- dropped ShareThis Apr 2026
- dropped WebFactory Under Construction Mar 2026
- dropped Adobe Audience Manager Jan 2026
- dropped Azure Jan 2026
- detected JuicyAds Dec 2025
- detected Cloudflare Browser Insights Nov 2025
- dropped Adobe Audience Manager Sep 2025
- dropped Google Font API Aug 2025
- dropped jsDelivr Aug 2025