sentences:  The AREC is a service provided as a component of the New Zealand Association of Radio Transmitters, which is a registered not-for-profit Incorporated Society.In late 2006 the nationwide Callsign Allocations of ZLxEx/ZLxExx - long recognised as 'Emergency' callsigns and administered by the AREC - were re-prefixed as ZKxEx/ZKxExx.The use of ZK by AREC stations serves to improve the recognition of the special nature of their radio traffic, and allow Amateurs to more easily grant AREC operations priority.