Change of cell phone number

Greetings.  If you've been using my iPhone number, 720-273-3046, to call me instead of using my advertised number of 303-525-1851, please don't use that 720 number anymore.  Effective on Monday, Jan. 4th, I am porting 303-525-1851 to my iPhone account.  The 720 number will disappear, and there will be no forwarding information on it.  Thanks!