580 SNTP HEARTBEAT - System Port | Service Name:sntp-heartbeat

580 is a System Port. Transport Protocol TCP UDP , 580 Service Name sntp-heartbeat, Service Name Description: SNTP HEARTBEAT.

Port	Protocol	Service Name	Description	Source
580	TCP UDP	sntp-heartbeat	SNTP HEARTBEAT	IANA
580	TCP UDP	sntp-heartbeat	SNTP HEARTBEAT	bekkoame

Port	Service Name	Description
924		Unassigned
1129	saphostctrls	SAPHostControl over SOAP/HTTPS
1940	jvclient	JetVision Client Port
2339	3com-webview	3Com WebView
2395	lan900-remote	LAN900 Remote IANA assigned this well-formed service name as a replacement for "lan900_remote".
2790	plgproxy	PLG Proxy
2907	webmethods-b2b	WEBMETHODS B2B
3679	Escale (Newton Dock)	Newton Dock
4388		Unassigned
4464		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