What powers senior21.or.kr?
Last seen Sep 2026 · 25 technologies across 14 categories
Analytics
Naver Analytics
since Jun 2022
CDN
CMS
Gnuboard
since Jun 2022
Databases
MySQL
since Jun 2022
Font scripts
Font Awesome
since Jul 2021
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PWA
since May 2025
Operating systems
CentOS
since Apr 2026
Programming languages
PHP
since Dec 2021
Security
Cloudflare Bot Management
since Apr 2026
UI frameworks
Web server extensions
Web servers
Apache HTTP Server
since Apr 2026
Nginx
since Jul 2021
AI Crawlers
Blocks 11 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
Search and AI assistants
- PerplexityBot Blocked
- PetalBot Blocked
User-request fetchers
- ChatGPT-User Blocked
The other 22 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
11 of 33 AI crawlers blocked
Audience
- 100% desktop
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.00 / 10 · ranked #12,534,300 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 25 ms |
| CLS | 0.15 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Korean
- Weight: 5.4 MB · 100 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| www.senior21.or.kr | 22 |
| senior21.or.kr | 13 |