2516 Main Control - User Port | Service Name:maincontrol

2516 is a User Port. Transport Protocol TCP UDP , 2516 Service Name maincontrol, Service Name Description: Main Control.

Port	Protocol	Service Name	Description	Source
2516	TCP UDP	maincontrol	Main Control	IANA
2516	TCP UDP	maincontrol	Main Control	bekkoame

Port	Service Name	Description
1391	iclpv-sas	Storage Access Server
3868	diameter	DIAMETER
5560		Unassigned
5772		Unassigned
7512		Unassigned
7867		Unassigned
9382		Unassigned
9737		Unassigned
11273		Unassigned
12057		Unassigned

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