About this number
(410) 631 is a landline based telephone number operated by Verizon Maryland, Inc. and is located in zip code 21222 in the city of Dundalk, Maryland, which is in Baltimore County, and is in the South. It has a Number Planning Area (NPA - also known as an Area Code) of 410 and Network Numbering Exchange (NXX - also known as a prefix) of 631. It has an Operating Company Number (OCN) of 9212. A Common Language Location Identifier (CLLI) of DNDLMDDNDS0. As well as a Local access and transport area (LATA) of 238. Zip code 21222 has a population of 55,786 as of the 2010 census.