What powers theory.net?
Last seen Sep 2026 · 18 technologies across 11 categories
Advertising
Google AdSense
since Jun 2020
Analytics
Cloudflare Browser Insights
since Sep 2026
Google Analytics
since Jun 2020
CDN
Cookie compliance
Font scripts
Google Font API
since Jul 2022
JavaScript libraries
Miscellaneous
HTTP/3
since Jan 2023
Performance
Priority Hints
since Sep 2026
Security
reCAPTCHA
since Jul 2022
Tag managers
Google Tag Manager
since Jul 2022
UI frameworks
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 checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.26 / 10 · ranked #65,906,825 of all domains
1 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| CLS | 0.2 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 0.5 MB · 40 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.21.44.44, IPv6)
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 28,030,227
DNS records as swept Aug 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| usa.theory.net | 17 |
| theory.net | 5 |