About this number
(617) 340 is a landline based telephone number operated by Ctc Communications Corp. - Ma and is located in zip code 02138 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 617 and Network Numbering Exchange (NXX - also known as a prefix) of 340. It has an Operating Company Number (OCN) of 3370. A Common Language Location Identifier (CLLI) of CMBRMAWA0MD. As well as a Local access and transport area (LATA) of 128. It was first assigned for usage on 10/11/2001. Zip code 02138 has a population of 36,314 as of the 2010 census.