3xx.dev
3xx.dev is a live English-language website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2026-09-23 and last crawled it on 2026-09-23. It resolves to 172.67.138.109 and has mail (MX) records set up. Its favicon is fingerprinted by SHA-256, so you can find every other site that serves the same icon.
How the site describes itself:
3xx.dev – Debug URL Redirects
Check where URLs redirect. Follow redirect chains, see every hop, status code, and timing. API and CLI for developers.
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2026-09-23 |
| Last crawled | 2026-09-23 |
| IPv4 | 172.67.138.109 |
| IPv6 | 2606:4700:3037::6815:4eed |
| Network | AS13335 Cloudflare, Inc. · United States |
| Mail (MX) | eforward1.registrar-servers.com,eforward3.registrar-servers.com,eforward2.registrar-servers.com,eforward4.registrar-servers.com,eforward5.registrar-servers.com |
| Language | en |
| Server | cloudflare |