What powers simtheory.ai?
Last seen Aug 2026 · 12 technologies across 9 categories
Analytics
CDN
Font scripts
Hosting
JavaScript graphics
Miscellaneous
Security
Tag managers
AI Crawlers
Blocks 8 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
The other 25 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
Content Signals:
search=yes ai-train=no declared in robots.txt
AI Crawlers
8 of 33 AI crawlers blocked
Standards: Content Signals
Audience
- 85% desktop
- 15% phone
United States
Australia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.53 / 10 · ranked #858,638 of all domains
35 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.4 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 7.5 MB · 49 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.20.25.18, IPv6)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC quarantine, CAA
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Oct 2026
- Common Crawl link graph: rank 11,208,814, 6 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| simtheory.ai | 11 |
| help.simtheory.ai | 3 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Nginx May 2026
- dropped Ubuntu May 2026
- detected cdnjs Apr 2026
- detected Cloudflare Apr 2026
- detected Sendgrid Apr 2026