About this number
(240) 448-3999 is a landline based telephone number operated by Comcast Phone Of Northern Mary and is located in zip code 20024 in the city of Washington, Maryland, which is in District Of Columbia County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 240, a Network Numbering Exchange (NXX - also known as a prefix) of 448 and a subscriber number of 3999. It has an Operating Company Number (OCN) of 107D. A Common Language Location Identifier (CLLI) of NOCLLIKNOWN. As well as a Local access and transport area (LATA) of 236. It was first assigned for usage on 04/16/2014. Zip code 20024 has a population of 11,510 as of the 2010 census.