1101 PT2-DISCOVER - User Port | Service Name:pt2-discover

1101 is a User Port. Transport Protocol TCP UDP , 1101 Service Name pt2-discover, Service Name Description: PT2-DISCOVER.

Port	Protocol	Service Name	Description	Source
1101	TCP UDP	pt2-discover	PT2-DISCOVER	IANA
1101	TCP UDP	pt2-discover	PT2-DISCOVER	bekkoame

Port	Service Name	Description
570	meter	demon
787		Unassigned
1637	islc	ISP shared local data control
2277	bluectrlproxy	Bt device control proxy
2498	odn-castraq	ODN-CasTraq
2781	whosells	whosells
5254		Unassigned
5444		Unassigned
5597	ininmessaging	inin secure messaging
5972		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