Port Number List

Port Number List

A port number is the logical address of each application or process that uses a network or the Internet to communicate. A port number uniquely identifies a network-based application on a computer. This number is assigned automatically by the OS, manually by the user or is set as a default for some popular applications

The port numbers are divided into three ranges: the well-known ports, the registered ports, and the dynamic or private ports. The registered ports are those from 1024 through 49151. IANA maintains the official list of well-known and registered ranges. The dynamic or private ports are those from 49152 through 65535.

Port Number List

1. FTP (File Transfer Protocol):
   • Port 20: Data transfer
   • Port 21: Control (command)
2. SSH (Secure Shell):
   • Port 22: Secure login
3. Telnet:
   • Port 23: Unencrypted text communication
4. SMTP (Simple Mail Transfer Protocol):
   • Port 25: Email transfer
5. DNS (Domain Name System):
   • Port 53: Domain name resolution
6. HTTP (Hypertext Transfer Protocol):
   • Port 80: Web traffic (unencrypted)
7. HTTPS (Hypertext Transfer Protocol Secure):
   • Port 443: Secure web traffic (encrypted)
8. SNMP (Simple Network Management Protocol):
   • Port 161: Network monitoring and management
9. LDAP (Lightweight Directory Access Protocol):
   • Port 389: Directory services
10. MySQL:
    • Port 3306: MySQL database
11. RDP (Remote Desktop Protocol):
    • Port 3389: Remote desktop access
12. FTP Secure (FTPS):
    • Port 989: FTPS protocol (data)
    • Port 990: FTPS protocol (control)
13. SFTP (SSH File Transfer Protocol):
    • Port 22: Secure file transfer over SSH
14. SMTPS (SMTP Secure):
    • Port 465: Encrypted SMTP
15. POP3 (Post Office Protocol version 3):
    • Port 110: Email retrieval
16. IMAP (Internet Message Access Protocol):
    • Port 143: Email retrieval
17. IMAPS (IMAP Secure):
    • Port 993: Secure email retrieval
18. NNTP (Network News Transfer Protocol):
    • Port 119: Usenet news
19. NTP (Network Time Protocol):
    • Port 123: Time synchronization
20. LDAP Secure (LDAPS):
    • Port 636: Encrypted LDAP

Download the Port Number List in PDF format using the link given below.