About this number
(857) 598 is a landline based telephone number operated by Xo Massachusetts, Inc. and is located in zip code 02141 in the city of Cambridge, Massachusetts, which is in Middlesex County, 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 598. It has an Operating Company Number (OCN) of 4536. A Common Language Location Identifier (CLLI) of CMBRMAMQDS0. As well as a Local access and transport area (LATA) of 128. It was first assigned for usage on 03/20/2001. Zip code 02141 has a population of 11,910 as of the 2010 census.