912 APEX relay-relay service - System Port

912 is a System Port. Transport Protocol TCP UDP , 912 Service Name apex-mesh, Service Name Description: APEX relay-relay service.

Port	Protocol	Service Name	Description	Source
912	TCP UDP	apex-mesh	APEX relay-relay service	IANA
912	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
912	TCP UDP	apex-mesh	APEX relay-relay service	bekkoame

Port	Service Name	Description
575	vemmi	VEMMI
1057	startron	STARTRON
1558	xingmpeg	xingmpeg
1885	vrtstrapserver	Veritas Trap Server
2588	privilege	Privilege
2984	hpidsadmin	HPIDSADMIN
3164	imprs	IMPRS
3846	an-pcp	Astare Network PCP
4341	lisp-data	LISP Data Packets
5067	authentx	Authentx Service

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