About this number
(240) 307-0097 is a landline based telephone number operated by At&T Local and is located in zip code 21770 in the city of Monrovia, Maryland, which is in Frederick 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 307 and a subscriber number of 0097. It has an Operating Company Number (OCN) of 7421. A Common Language Location Identifier (CLLI) of MNRVMDMOX2X. As well as a Local access and transport area (LATA) of 240. It was first assigned for usage on 03/27/2003. Zip code 21770 has a population of 5,164 as of the 2010 census.