About this number
(240) 553-4640 is a landline based telephone number operated by Allegiance Telecom, Inc. - Md and is located in zip code 20200 in the city of Wsng236Z13, 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 553 and a subscriber number of 4640. It has an Operating Company Number (OCN) of 8992. A Common Language Location Identifier (CLLI) of WASHDCRKDS3. As well as a Local access and transport area (LATA) of 236.