About this number
(856) 340 is a landline based telephone number operated by Level 3 Communications, LLC - and is located in zip code 08540 in the city of Princeton, New Jersey, which is in Mercer County, and is in the Northeast. It has a Number Planning Area (NPA - also known as an Area Code) of 856 and Network Numbering Exchange (NXX - also known as a prefix) of 340. It has an Operating Company Number (OCN) of 4804. A Common Language Location Identifier (CLLI) of PRTNNJ312MD. As well as a Local access and transport area (LATA) of 222. It was first assigned for usage on 02/21/2002. Zip code 08540 has a population of 47,115 as of the 2010 census.