runestone.academy
runestone.academy is a live website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2025-08-20 and last crawled it on 2026-06-24. It resolves to 172.67.68.152 and has mail (MX) records set up. We've seen 5 of its subdomains, listed below. Its favicon is fingerprinted by SHA-256, so you can find every other site that serves the same icon.
How the site describes itself:
Free Online Textbooks for Math and Computer Science - Runestone Academy
Free Online Textbooks for Math and Computer Science
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2025-08-20 |
| Last crawled | 2026-06-24 |
| IPv4 | 172.67.68.152 |
| IPv6 | 2606:4700:20::681a:60e |
| Network | AS13335 Cloudflare, Inc. · California |
| CNAME | runestone.academy |
| Mail (MX) | aspmx.l.google.com.,alt2.aspmx.l.google.com.,alt1.aspmx.l.google.com.,alt4.aspmx.l.google.com.,alt3.aspmx.l.google.com. |
| Server | cloudflare |
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