What powers 
cognitiveatlas.org?
Last seen Aug 2026 · 13 technologies across 10 categories
Analytics
CDN
cdnjs
since Jul 2022
Cloudflare
since Jul 2022
Mailgun
since Aug 2022
Font Scripts
Google Font API
since May 2017
JavaScript Frameworks
JavaScript libraries
Select2
since Aug 2018
Programming languages
Python
since Aug 2018
UI frameworks
Web frameworks
Django
since Aug 2018
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.83 / 10 · ranked #700,789 of all domains
52 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.8 MB · 30 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Amazon Web Services (52.39.220.155)
- DNS: Namecheap
- Email: Mailgun
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 623,538, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| cognitiveatlas.org | 13 |
| www.cognitiveatlas.org | 13 |