YouGetSignal

Choose the check that matches the question, rather than treating DNS, TLS and port results as interchangeable. YouGetSignal’s port form accepts an IP address or domain, a port and a region, with a shortcut for the current public address. That supplies a remote viewpoint for investigating forwarding or a server blocked by a firewall. Keep the selected region and port with the result, since it does not describe every client path or validate a certificate. The surrounding suite adds DNS records, registration lookup, reverse-IP associations and HTTP-response inspection for related questions.