What powers blackcircles.co.kr?
Last seen Jun 2026 · 28 technologies across 13 categories
Analytics
Amplitude
since Jul 2025
Datadog
since Jul 2025
Google Analytics
since May 2020
Naver Analytics
since Feb 2022
CDN
Google Hosted Libraries
since Feb 2022
jsDelivr
since Oct 2022
CMS
Gnuboard
since Apr 2022
Databases
MySQL
since Apr 2022
Ecommerce
Cart Functionality
since Mar 2021
Font scripts
Font Awesome
since Jul 2020
JavaScript frameworks
React
since Jun 2021
JavaScript libraries
Live chat
Channel.io
since Jan 2026
Miscellaneous
PaaS
Amazon Web Services
since Mar 2021
Programming languages
Web servers
Amazon EC2
since Mar 2021
Audience
- 69% desktop
- 31% phone
South Korea
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.95 / 10 · ranked #13,646,611 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Korean
- Weight: 18.4 MB · 334 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| blackcircles.co.kr | 28 |
| www.blackcircles.co.kr | 28 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Bootstrap Jan 2026
- detected Channel.io Jan 2026
- detected React Jan 2026
- detected styled-components Jan 2026
- dropped Acoustic Experience Analytics Dec 2025
- detected Bootstrap Nov 2025