Port Scanner Online

Free online Nmap port scanner useful to run a TCP port scan on an IP address. Check what TCP ports are open on your website, check if your server has common TCP ports (e.g 21, 22, 23, 80, 443) open. Test your server's firewall and make sure it has specific TCP ports closed. You agree to not scan IP addresses you are not authorized to scan.

Enter IPv4/IPv6 address to scan:

  Scan all common ports
  Scan a custom port
  I agree to the terms of use