Wireless Number Portability (WNP) is a wireless consumer's ability to change service providers within the same general metropolitan area or local calling area and keep their existing phone number. WNP also allows consumers to move a phone number from a wireline phone to a wireless phone (and vice versa). Canada will be the second country in the world (after the US) to offer complete wireless-to-wireless, wireless-to-wireline and wireline-to-wireless portability.
WNP became available in metropolitan areas across Canada on March 14, 2007.