About this number
There is 1 comment for this phone number. (301) 478-9923 is a landline based telephone number operated by Verizon Maryland, Inc. and is located in zip code 21555 in the city of Oldtown, Maryland, which is in Allegany County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 301, a Network Numbering Exchange (NXX - also known as a prefix) of 478 and a subscriber number of 9923. It has an Operating Company Number (OCN) of 9212. A Common Language Location Identifier (CLLI) of OLTWMDOTRS0. As well as a Local access and transport area (LATA) of 240. Zip code 21555 has a population of 1,936 as of the 2010 census.