What powers challengejournal.com?
Last seen Oct 2026 · 8 technologies across 4 categories
JavaScript libraries
Miscellaneous
Programming languages
Web servers
Google Web Server
since Sep 2026
LiteSpeed
since Jul 2022
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 63% desktop
- 37% phone
India
Türkiye
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.75 / 10 · ranked #2,083,921 of all domains
28 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1100 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Google
- Weight: 0.6 MB · 28 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Challenge Journal of Concrete Research Letters
From Wikidata (CC0).
Infrastructure
- Hosted on OVHcloud (149.202.246.126)
- DNS: guzelhosting.com
- Email: guzel.net.tr
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 2,392,551, 6 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| challengejournal.com | 5 |
| www.challengejournal.com | 5 |
Full technology history →
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Recent changes
- detected Google Web Server Sep 2026
- detected PWA Sep 2026
- detected Open Graph Jul 2026