Assigned, Registered and Dynamic Port Numbers
FTP site: ftp://ftp.isi.edu/in-notes/iana/assignments.
- Up-to-date assignments of numbers
Assigned numbers range from 0-1023.
- Assigned are reserved by IANA and cannot be used
- Used for TCP, IP, UDP, and various applications such as TELNET
Registered numbers range from 1024-65535 and these are companies that have registered their application.
Dynamic port numbers also range from 1024-65535.