What powers janss.kr?
Last seen Oct 2026 · 9 technologies across 8 categories
CDN
Google Hosted Libraries
since Nov 2023
Font scripts
Font Awesome
since Nov 2023
JavaScript libraries
PaaS
Amazon Web Services
since Nov 2023
Programming languages
PHP
since Nov 2023
UI frameworks
Bootstrap
since Nov 2023
Web frameworks
CodeIgniter
since Nov 2023
Web servers
Apache HTTP Server
since Nov 2023
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% desktop
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.78 / 10 · ranked #4,467,872 of all domains
13 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| INP | 50 ms |
| CLS | 0.25 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Weight: 8.6 MB · 44 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Journal of Astronomy and Space Sciences
- Country: South Korea
From Wikidata (CC0).
Infrastructure
- Hosted on Amazon Web Services (3.36.201.134)
- DNS: Amazon Route 53
- Email: no MX record returned
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 7,040,699, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted