TCP Ping
Check whether a host accepts connections on a given TCP port, and how quickly it responds.
Unlike ICMP ping, a TCP ping opens an actual connection to a specific port — so it tells you whether a service (not just the host) is reachable. It works even when ICMP is firewalled, which is common on modern networks.
Enter a host and a port (default 443) above to measure reachability and round-trip time.
Frequently asked questions
Why use TCP ping instead of normal ping?
Many hosts block ICMP echo (normal ping) but still serve traffic. A TCP ping to the real service port confirms the service is actually reachable.
What does a timeout mean?
No response before the deadline — the port is filtered by a firewall, the service is down, or the host is unreachable.
Which port should I test?
Test the port the service uses: 443 for HTTPS, 22 for SSH, 3306 for MySQL, 25/587 for mail, and so on.