1170 AT+C License Manager - User Port

1170 is a User Port. Transport Protocol TCP UDP , 1170 Service Name atc-lm, Service Name Description: AT+C License Manager.

Port	Protocol	Service Name	Description	Source
1170	TCP UDP	atc-lm	AT+C License Manager	IANA
1170	TCP		Psyber Stream Server, Streaming Audio Trojan, Voice	emsisoft
1170	TCP		Psyber Stream Server, Streaming Audio Server, VoiceDLL	anti-trojan
1170			Psyber Stream Server - PSS, Streaming Audio Server, Voice	sans.org
1170			Psyber Stream Server , Voice	simovits.com
1170	TCP		Psyber Stream Server PSS, Streaming Audio Server, Voice	bekkoame
1170	TCP UDP	atc-lm	AT+C License Manager	bekkoame

Port	Service Name	Description
1348	bbn-mmx	multi media conferencing
1735	privatechat	PrivateChat
2426		Unassigned
2577	scipticslsrvr	Scriptics Lsrvr
2910	tdaccess	TDAccess
3516	smartcard-port	Smartcard Port
4621		Unassigned
4739	ipfix	IP Flow Info Export
5335		Unassigned
5550		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