undefinedbehavior.dev
undefinedbehavior.dev is a live English-language website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2026-08-01 and last crawled it on 2026-08-05. It resolves to 172.67.216.130 and has mail (MX) records set up.
How the site describes itself:
Undefined Behavior
Software consulting services to help you get it shipped
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2026-08-01 |
| Last crawled | 2026-08-05 |
| IPv4 | 172.67.216.130 |
| IPv6 | 2606:4700:3031::6815:10e4 |
| Network | AS13335 Cloudflare, Inc. · United States |
| Mail (MX) | mxa.mailgun.org,mxb.mailgun.org |
| Language | en |
| Server | cloudflare |