About this number
(857) 305 is a landline based telephone number operated by Level 3 Communications, LLC - and is located in the city of Boston, 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 305. It has an Operating Company Number (OCN) of 4018. A Common Language Location Identifier (CLLI) of CMBRMAORRS1. As well as a Local access and transport area (LATA) of 128. It was first assigned for usage on 07/19/2013.