About this number
(234) 421 is a landline based telephone number operated by At&T Local and is located in zip code 44503 in the city of Youngstown, Ohio, which is in Mahoning County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 234 and Network Numbering Exchange (NXX - also known as a prefix) of 421. It has an Operating Company Number (OCN) of 7421. A Common Language Location Identifier (CLLI) of YNTWOH02ZMD. As well as a Local access and transport area (LATA) of 322. It was first assigned for usage on 06/02/2004. Zip code 44503 has a population of 1,021 as of the 2010 census.