About this number
(317) 421 is a landline based telephone number operated by Ameritech Indiana and is located in zip code 46176 in the city of Shelbyville, Indiana, which is in Shelby County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 317 and Network Numbering Exchange (NXX - also known as a prefix) of 421. It has an Operating Company Number (OCN) of 9325. A Common Language Location Identifier (CLLI) of SHVLIN01DS1. As well as a Local access and transport area (LATA) of 336. Zip code 46176 has a population of 27,816 as of the 2010 census.