What powers bookcosmos.com?
Last seen Oct 2026 · 21 technologies across 11 categories
CDN
cdnjs
since Dec 2023
Cloudflare
since Dec 2023
Google Hosted Libraries
since Dec 2023
jsDelivr
since Jan 2026
Unpkg
since Aug 2025
Ecommerce
Cart Functionality
since Mar 2021
Font scripts
Google Font API
since Mar 2021
JavaScript libraries
DataTables
since Dec 2023
Swiper
since Dec 2023
Load balancers
Miscellaneous
Kakao
since Sep 2022
Open Graph
since Sep 2022
Operating systems
Windows Server
since Aug 2018
UI frameworks
Bootstrap
since Apr 2021
Tailwind CSS
since Aug 2025
Video players
YouTube
since Mar 2021
Web frameworks
Microsoft ASP.NET
since Oct 2016
Web servers
IIS
since Oct 2016
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 94% desktop
- 6% phone
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.93 / 10 · ranked #3,764,730 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Korean
- Weight: 1.8 MB · 68 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- CLab 클랩
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Korea Telecom (183.111.64.228)
- DNS: bookcosmos.com
- Email: bookcosmos.com
- Email security: SPF (soft fail), DMARC monitor only
- SSL: GlobalSign, RSA 2048, wildcard, expires Nov 2026
- Common Crawl link graph: rank 17,351,810, 19 hosts
- Verified with: GlobalSign
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| anyanglib.bookcosmos.com | 12 |
| m.bookcosmos.com | 11 |
| sogang.bookcosmos.com | 11 |
| syu.bookcosmos.com | 11 |
| smu.bookcosmos.com | 10 |
| bookticket.bookcosmos.com | 6 |
| learn.bookcosmos.com | 6 |
| mbookticket.bookcosmos.com | 6 |
| www.bookcosmos.com | 6 |
| genlib.bookcosmos.com | 5 |
| mnonghyup.bookcosmos.com | 5 |
| bcmall.bookcosmos.com | 4 |
| mwooribank.bookcosmos.com | 4 |
| wooribank.bookcosmos.com | 4 |
| msogang.bookcosmos.com | 3 |
| kbooktest.bookcosmos.com | 2 |
Full technology history →
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Recent changes
- detected jsDelivr Jan 2026