Port 1621 is not reserved for any specific application or service. It is an unassigned port, meaning it can be used by any application or service that needs it.
Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.
Official
Port |
Protocol (TCP/UDP) |
Title |
Description |
Port Type |
Port 1621 |
tcp |
softdataphone |
softdataphone |
REGISTERED PORT |
Port 1621 |
udp |
softdataphone |
softdataphone |
REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
Port | Protocol (TCP/UDP) | Description |