If the vehicle has a North Carolina registration plate or registration, notice shall be given to the owner within 24 hours; if the vehicle is not registered in this State, notice shall be given to the owner within 72 hours. This notice shall, if feasible, be given by telephone. Whether or not the owner is reached by telephone, notice shall be mailed to his last known address unless he or his agent waives this notice in writing.
N.C. Gen. Stat. § 20-219.11