About this number
(740) 643 is a landline based telephone number operated by Ameritech Ohio and is located in zip code 45688 in the city of Waterloo, Ohio, which is in Lawrence County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 740 and Network Numbering Exchange (NXX - also known as a prefix) of 643. It has an Operating Company Number (OCN) of 9321. A Common Language Location Identifier (CLLI) of ARABOH64RS1. As well as a Local access and transport area (LATA) of 324. Zip code 45688 has a population of 475 as of the 2010 census.