What powers crstra.dz?
Last seen Aug 2026 · 11 technologies across 7 categories
CDN
Font scripts
Miscellaneous
Security
UI frameworks
Video players
Web servers
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Algeria
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.66 / 10 · ranked #2,225,866 of all domains
22 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.9 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Arabic
- Weight: 9.4 MB · 112 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Centre de Recherche Scientifique et Technique sur les Régions Arides
- Founded: 1924
- Country: Algeria
From Wikidata (CC0).
Infrastructure
- Hosted on ALGTEL-AS (41.111.218.203)
- DNS: crstra.dz
- Email: no MX record returned
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 8,123,642, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| crstra.dz | 11 |
| www.crstra.dz | 11 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Google Tag Manager Feb 2026
- detected cdnjs Jan 2026
- detected Cloudflare Jan 2026