What powers proofschool.org?
Last seen Aug 2026 · 29 technologies across 14 categories
CDN
CMS
Ecommerce
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Operating systems
Performance
Programming languages
Security
Web frameworks
Web servers
Webmail
AI Crawlers
Restricts 16 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- AI2Bot Restricted
- Applebot-Extended Restricted
- Bytespider Restricted
- CCBot Restricted
- ClaudeBot Restricted
- cohere-training-data-crawler Restricted
- FacebookBot Restricted
- Google-Extended Restricted
- GoogleOther Restricted
- GPTBot Restricted
- img2dataset Restricted
- meta-externalagent Restricted
- Webzio-Extended Restricted
Search and AI assistants
- Amazonbot Restricted
- DuckAssistBot Restricted
- YouBot Restricted
The other 17 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
- Sep 2026 gptbot added to robots.txt
- Sep 2026 applebot-extended added to robots.txt
- Sep 2026 bytespider added to robots.txt
- Sep 2026 claudebot added to robots.txt
- Sep 2026 anthropic-ai added to robots.txt
- Sep 2026 ccbot added to robots.txt
AI Crawlers
16 of 33 AI crawlers restricted
Audience
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.28 / 10 · ranked #2,918,178 of all domains
14 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- Weight: 3.9 MB · 95 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Proof School
- Country: United States
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Squarespace (198.185.159.144)
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 6,910,955, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.proofschool.org | 18 |
| portal.proofschool.org | 11 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped jQuery CDN Aug 2026
- dropped RSS Aug 2026
- dropped Typekit Aug 2026
- detected Cart Functionality Jul 2026
- detected jsDelivr Jul 2026
- detected Popper Jul 2026
- detected reCAPTCHA Jul 2026
- detected Tippy.js Jul 2026
- detected Angular Apr 2026
- detected TypeScript Apr 2026
- detected Zone.js Apr 2026
- dropped Cart Functionality Mar 2026
- detected Cart Functionality Oct 2025