5913 Automatic Dependent Surveillance - User Port

5913 is a User Port. Transport Protocol TCP UDP , 5913 Service Name ads-c, Service Name Description: Automatic Dependent Surveillance.

Port	Protocol	Service Name	Description	Source
5913	TCP UDP	ads-c	Automatic Dependent Surveillance	IANA
5913	SCTP	ads-c	Automatic Dependent Surveillance	IANA

Port	Service Name	Description
1045	fpitp	Fingerprint Image Transfer Protocol
1356	cuillamartin	CuillaMartin Company
1691	empire-empuma	empire-empuma
2130	xds	XDS
2154	stdptc	Standard Protocol
2752	rsisysaccess	RSISYS ACCESS
2868	npep-messaging	NPEP Messaging
3314	uohost	Unify Object Host
3487	ltctcp	LISA TCP Transfer Channel
3667	infoexch	IBM Information Exchange

A port is an endpoint of communication in an operating system. While the term is also used for hardware devices, in software it is a logical construct that identifies a specific process or a type of service.

Port numbers are assigned in various ways, based on three ranges: System Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private Ports (49152-65535);

The Well Known Ports are assigned by the IANA and on most systems can only be used by system (or root) processes or by programs executed by privileged users. Ports are used in the TCP [RFC793] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers, a service contact port is defined. This list specifies the port used by the server process as its contact port. The contact port is sometimes called the "well-known port". To the extent possible, these same port assignments are used with the UDP [RFC768]. The range for well-known ports managed by the IANA is 0-1023.
DYNAMIC AND/OR PRIVATE PORTS Registered Ports are those from 1024 through 49151.
The Dynamic and/or Private Ports are those from 49152 through 65535