1242 NMAS over IP - User Port | Service Name:nmasoverip

1242 is a User Port. Transport Protocol TCP UDP , 1242 Service Name nmasoverip, Service Name Description: NMAS over IP.

Port	Protocol	Service Name	Description	Source
1242	TCP UDP	nmasoverip	NMAS over IP	IANA
1242	TCP UDP	nmasoverip	NMAS over IP	bekkoame

Port	Service Name	Description
953		Unassigned
1200	scol	SCOL
2568	spamtrap	SPAM TRAP
3045	responsenet	ResponseNet
3514	must-p2p	MUST Peer to Peer
5041		Unassigned
8717		Unassigned
9772		Unassigned
9842		Unassigned
10187		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