Local Calling Guide

Area code/prefix search

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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 856

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-856 A Concord NH MNCHNHCOX9Y  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-856 0 Concord NH MNCHNHCOX9Y  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-856 1 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-856 2 Concord NH MNCHNHCOX9Y  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-856 3 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-856 4 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-856 5 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-856 6 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-856 7 Concord NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-856 8 Concord NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-856 9 Concord NH MNCHNHCOX9Y  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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