Information about the website www.feynmanlectures.caltech.edu.
We took the latest snapshot and metadata from this website at 2026-05-04 17:32:06.
Link to www.feynmanlectures.caltech.edu ยท Shareable URL
| Site title: | The Feynman Lectures on Physics |
|---|---|
| Site description: | |
| Site keywords: | No data |
| Thumbnail: |
|
| URL: | https://www.feynmanlectures.caltech.edu/ |
| HTTP status: | 200 |
| Primary IP: | 104.18.36.106 |
| HTTP server: | cloudflare |
| Redirect hops: | 1 |
| TTFB: | 636 ms |
| Total load: | 638 ms |
| TLS expiry: | 2026-07-24 23:52:04 |
| Robots status: | 200 |
| Canonical URL: | No data |
| Sitemap: | https://feynmanlectures.caltech.edu/sitemap.xml, http://feynmanlectures.caltech.edu/sitemap.xml, https://www.feynmanlectures.caltech.edu/sitemap.xml, http://www.feynmanlectures.caltech.edu/sitemap.xml |
| Hreflang: | No data |
| OpenGraph title: | No data |
| JS rendered title: | Attention Required! | Cloudflare |
| Tech detected: | cloudflare |
| Security headers: | No data |
| Anti-bot detected: | No |
| Uptime trend (20): | 100% success, avg TTFB 636 ms, avg total 638 ms |
| Whois: | No RDAP data |