Local Calling Guide

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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-525 9 Hancock NH HNCCNHSCRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-526 A New London NH NWLNNHXARP0  0045 KEARSARGE TEL. CO. 122      
603-527 A Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 0 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 1 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 2 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 3 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 4 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 5 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 6 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 7 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-527 8 Laconia NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122   2008-04-18   
603-527 9 Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-528 A Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-529 A Weare NH WEARNHXADS1  0039 GRANITE STATE TEL., INC. 122      
603-530 A Bristol NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-530 0 Bristol NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-530 1 Bristol NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2012-09-18   
603-530 2 Bristol NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-530 4 Bristol NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-11-10   
603-530 5 Bristol NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-11-10   
603-530 8 Bristol NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-06-30   
603-531 A Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-531 0 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-531 1 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-531 2 Portsmouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2016-07-01   
603-531 3 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-531 4 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2007-07-19   
603-531 5 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2007-07-19   
603-531 6 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2007-07-19   
603-531 7 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2009-09-26   
603-531 8 Portsmouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-12-11   
603-531 9 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2006-02-21   
603-532 A Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-532 0 Jaffrey NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2001-02-22   
603-532 1 Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-532 2 Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-532 3 Jaffrey NH   145J TERRA NOVA TELECOM INC. 122   2021-05-27   
603-532 4 Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-532 5 Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-532 6 Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-532 7 Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-532 8 Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-532 9 Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-533 A Merrimack NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-533 0 Merrimack NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-533 1 Merrimack NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-533 2 Merrimack NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-533 3 Merrimack NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-533 4 Merrimack NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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