<Back to Last Page> <Port Numbers Glossary> <Networking Glossary>
0-9 | 10-49 | 50-99 | 100-149 | 150-199 | 200-249 | 250-299 | 300-349 | 350-699 | 700-799 | 800-1023 | 1024-49151 | 49152-65535
TCP and UDP port numbers between 1024 and 49151 are called registered ports. The
IANA maintains a listing of services using ports in this range to minimize conflicting uses. Unlike ports with lower numbers, developers of new TCP/UDP services can select a specific number to register with IANA rather than having a number assigned to them. Using registered ports also avoids the additional security restrictions that operating systems place on ports with lower numbers.1024-49151
