Area Code 603-528 located in SANBORNTON, BELKNAP, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 528 City : SANBORNTON County : BELKNAP State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 33001 LATA (Local Access Transport Area) : 122 Rate Center : LACONIA ZIP Code Count : 112 ZIP Code Frequency : 3 ZIP Code : 03269 Other Information NPANXX : 603528 County Population : 0 Switch CLLI (Common Language Location Identifier) : LACNNHNMDS0 MSA CBSA (Core Based Statistical Area) : Laconia, NH MSA CBSA Code (Core Based Statistical Area) : 29060 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NO NEW ENGLAND TEL OP DBA FAIRPOINT COMM - NH OCN (Operating Company Number) : 5113 Coverage Area Name : LACONIA Latitude : 43.5313 Longitude : -71.4694 ‹ previous : 603-528 next › : 603-528 Telephone Number List 603-528-0000 ~ 603-528-9999