526 newdate - System Port | Service Name:tempo

526 is a System Port. Transport Protocol TCP UDP , 526 Service Name tempo, Service Name Description: newdate.

Port	Protocol	Service Name	Description	Source
526	TCP UDP	tempo	newdate	IANA
526	TCP UDP	tempo	newdate	bekkoame

Port	Service Name	Description
500	isakmp	isakmp
1139	evm	Enterprise Virtual Manager
1519	vpvc	Virtual Places Video control
1955	abr-secure	ABR-Secure Data (diskbridge)
2379		Unassigned
3008	midnight-tech	Midnight Technologies
3416	commandport	AirMobile IS Command Port
3568	enc-tunnel-sec	EMIT secure tunnel
4461		Unassigned
4729		Reserved

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