Port 4990

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 4990
tcp
busycal
BusySync Calendar Synch.
REGISTERED PORT
Port 4990
udp
busycal
BusySync Calendar Synch.
REGISTERED PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
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