700 Extensible Provisioning Protocol - System Port

700 is a System Port. Transport Protocol TCP UDP , 700 Service Name epp, Service Name Description: Extensible Provisioning Protocol.

Port	Protocol	Service Name	Description	Source
700	TCP UDP	epp	Extensible Provisioning Protocol	IANA
700	TCP		EPP (Extensible Provisioning Protocol), a protocol for communication between domain name registries and registrars(RFC 5734),Official	wikipedia
700	TCP UDP		Mac OS X RPC-based services, Used by NetInfo, for example	Apple.com
700			REx	simovits.com
700	TCP UDP	buddyphone	This Internet telephony product communicates over this port as well as the TCP range 5000-5111.	bekkoame
700	TCP UDP	epp	Extensible Provisioning Protocol	bekkoame

Port	Service Name	Description
1954	abr-api	ABR-API (diskbridge)
3351	btrieve	Btrieve port
3600	trap-daemon	text relay-answer
5562		Unassigned
7855		Unassigned
8127		Unassigned
8262		Unassigned
8365		Unassigned
9326		Unassigned
10740		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