Local Calling Guide

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

NXX: 260

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-260 A Derry NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-260 0 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2014-03-01   
603-260 1 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2014-05-01   
603-260 2 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2014-08-01   
603-260 3 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2015-06-01   
603-260 4 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2015-03-01   
603-260 5 Derry NH   318J COMCAST IP PHONE, LLC 122   2013-06-01   
603-260 6 Derry NH   318J COMCAST IP PHONE, LLC 122   2014-09-05   
603-260 7 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2016-10-01   
603-260 8 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2015-12-07   
603-260 9 Derry NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2014-12-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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