Built with Substack and React, hosted on AWS behind Cloudflare.
Confidence reflects how many independent signals matched.
| Technology | Version | Confidence | First seen |
|---|---|---|---|
| CMS & Site Builders1 | |||
| – | High | 14 Oct 2026 | |
| JavaScript Frameworks & Libraries2 | |||
| – | High | 14 Oct 2026 | |
| – | High | 14 Oct 2026 | |
| Frontend Build Tools & CSS1 | |||
| – | High | 14 Oct 2026 | |
| Web Servers, Languages & Backend Frameworks2 | |||
| – | High | 14 Oct 2026 | |
| CDN & Hosting5 | |||
| – | High | 14 Oct 2026 | |
| – | High | 14 Oct 2026 | |
| Analytics & Tag Management2 | |||
| – | High | 14 Oct 2026 | |
| Accessibility1 | |||
| – | Medium | 14 Oct 2026 | |
| Error Tracking & Performance Monitoring1 | |||
| – | High | 14 Oct 2026 | |
| Fonts & Icon Fonts1 | |||
| – | High | 14 Oct 2026 | |
| Security, WAF & Bot Protection2 | |||
| – | High | 14 Oct 2026 | |
mail.astralcodexten.comns8385.hostgator.comns8386.hostgator.comv=spf1 a mx include:websitewelcome.com ~allUser-agent: BLEXBot Disallow: / User-agent: Twitterbot Disallow: User-agent: * Disallow: /action/ Disallow: /publish Disallow: /sign-in Disallow: /channel-frame Disallow: /session-attribution-frame Disallow: /visited-surface-frame Disallow: /feed/private Disallow: /feed/podcast/*/private/*.rss Disallow: /subscribe Disallow: /lovestack/* Disallow: /p/*/comment/* Disallow: /inbox/post/* Disallow: /notes/post/* Disallow: /embed User-agent: facebookexternalhit Allow: / Allow: /subscribe SITEMAP: https://www.astralcodexten.com/sitemap.xml SITEMAP: https://www.astralcodexten.com/news_sitemap.xml
| – |
| High |
| 14 Oct 2026 |
| – |
| High |
| 14 Oct 2026 |
| – | High | 14 Oct 2026 |
| – | High | 14 Oct 2026 |
| – |
| High |
| 14 Oct 2026 |
| – |
| High |
| 14 Oct 2026 |