authchk.org
authchk.org is a live English-language website hosted on Cloudflare, Inc. (AS13335) in the United States, served by Cloudflare. cl0q first saw it on 2026-10-13 and last crawled it on 2026-10-14. It resolves to 172.67.133.72 and has mail (MX) records set up.
How the site describes itself:
Authenticated SMTP Email Relay Service | AuthSMTP
AuthSMTP is the outgoing SMTP email service for your e-commerce website, mailing list or email application on current computers and mobile devices.
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2026-10-13 |
| Last crawled | 2026-10-14 |
| IPv4 | 172.67.133.72 |
| IPv6 | 2606:4700:3030::ac43:8548 |
| Network | AS13335 Cloudflare, Inc. · California |
| Mail (MX) | route2.mx.cloudflare.net,route3.mx.cloudflare.net,route1.mx.cloudflare.net |
| Language | en |
| Server | cloudflare |