About this number
(720) 638 is a landline based telephone number operated by Comcast Phone Of Colorado, LLC and is located in the city of Denver, Colorado and is in the West. It has a Number Planning Area (NPA - also known as an Area Code) of 720 and Network Numbering Exchange (NXX - also known as a prefix) of 638. It has an Operating Company Number (OCN) of 320A. A Common Language Location Identifier (CLLI) of AURSCO13PS1. As well as a Local access and transport area (LATA) of 656. It was first assigned for usage on 01/17/2013.