NCP, or Network Control Protocol, preceded TCP as a transport layer protocol for the ARPANET. It was simplex, ergo each application required two connections, and an even-odd pair of numbers was reserved for each application. Most of the port numbers for standard services (e.g. Telnet, FTP, SMTP) are based off the NCP port numbers.

See: Novell, ncpfs, NDS, MARS NWE.

The name of a British company ("National Car Parks/Parking" ) that owns and operates a large number of multi-story car parks. The company took advantage of WW2 by buying (at a good rate) the land of bombed-out buildings and turning them into car parks.