About this number
(857) 389 is a wireless/mobile based telephone number operated by Omnipoint Miami E License, LLC and is located in the city of Charlestn, Massachusetts and is in the Northeast. It has a Number Planning Area (NPA - also known as an Area Code) of 857 and Network Numbering Exchange (NXX - also known as a prefix) of 389. It has an Operating Company Number (OCN) of 6889. A Common Language Location Identifier (CLLI) of NRTNMAAACM3. As well as a Local access and transport area (LATA) of 128. It was first assigned for usage on 12/14/2001.