beforeproof.com
beforeproof.com is a live English-language website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2026-09-21 and last crawled it on 2026-09-21. It resolves to 172.67.219.186.
How the site describes itself:
Before Proof — The emergence of mathematical thought
Textbooks run mathematics backwards — definition, theorem, proof, and an example if there is room. Excellent for storage, useless for learning.
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2026-09-21 |
| Last crawled | 2026-09-21 |
| IPv4 | 172.67.219.186 |
| IPv6 | 2606:4700:3030::6815:2644 |
| Network | AS13335 Cloudflare, Inc. · United States |
| Language | en |
| Server | cloudflare |