Area Code 603-449 located in MILAN, COOS, NH, more detail is as below. Place NPA (Numbering Plan Area) : 603 NXX (Local Number Prefix) : 449 City : MILAN County : COOS State : NH (New Hampshire) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 33007 LATA (Local Access Transport Area) : 122 Rate Center : MILAN ZIP Code Count : 812 ZIP Code Frequency : 95 ZIP Code : 03588 Other Information NPANXX : 603449 County Population : 0 Switch CLLI (Common Language Location Identifier) : MILNNHPLRS1 MSA CBSA (Core Based Statistical Area) : Berlin, NH-VT MSA CBSA Code (Core Based Statistical Area) : 13620 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 : MILAN Latitude : 44.5732 Longitude : -71.1897 ‹ previous : 603-449 next › : 603-451 Telephone Number List 603-449-0000 ~ 603-449-9999