- If some house numbers are missing, Waze will try to interpolate the missing house number of the requested address. This works in case of a lot of house numbers in a small spot or if house numbers are uniformly distributed in space between 2 registered house numbers. This interpolation works with a maximum step of 20, for both sides: the even and odd numbers. It is enough when the numbers 1, 21, 41 and 2, 22, 42 etc are entered.