Port Check

Check port availability on a specified server or device

You can enter a domain name or IP address
Maximum 10 ports per check

Check results:

Host:
0 open 0 closed 0 errors
Port Service Status Response time
Important: Note that some ports may be blocked by a firewall or may not respond due to network restrictions.

How does the port check work?

Our port checking tool allows you to determine which ports are open on a specified server or device. This is useful for:

  • Network problem diagnostics
  • Service availability checks (web server, FTP, SSH, etc.)
  • System security analysis
  • Testing firewall configuration

Commonly used ports:

  • 20-21 FTP (File Transfer Protocol)
  • 22 SSH (Secure Shell)
  • 25 SMTP (Simple Mail Transfer Protocol)
  • 53 DNS (Domain Name System)
  • 80 HTTP (Hypertext Transfer Protocol)
  • 110 POP3 (Post Office Protocol)
  • 143 IMAP (Internet Message Access Protocol)
  • 443 HTTPS (HTTP Secure)