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
1058	nim	nim
1145	x9-icue	X9 iCue Show Control
1311	rxmon	RxMon
1513	fujitsu-dtc	Fujitsu Systems Business of America, Inc
3623	haipe-discover	HAIPIS Dynamic Discovery
4026	as-debug	Graphical Debug Server
5686		Unassigned
6383		Unassigned
6503	boks-clntd	BoKS Clntd IANA assigned this well-formed service name as a replacement for "boks_clntd".
6998	iatp-highpri	IATP-highPri

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