What powers 
uiua.org?
Last seen Aug 2026 · 5 technologies across 5 categories
Caching
Varnish
since Oct 2023
CDN
Fastly
since Oct 2023
Mailgun
since Aug 2026
Font scripts
Google Font API
since Mar 2025
PaaS
GitHub Pages
since Oct 2023
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
- 62% desktop
- 38% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.91 / 10 · ranked #639,965 of all domains
49 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| CLS | 0.2 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Fastly
- Weight: 5.9 MB · 16 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Google Cloud DNS
- Email: Mailgun
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 98,378, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Mailgun Aug 2026