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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
603-543 1 Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-543 2 Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-543 3 Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-543 4 Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-543 5 Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-543 6 Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-543 7 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-543 8 Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-543 9 Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-544 A Melvin Village NH MLVGNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-544 0 Melvin Village NH MLVGNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-544 2 Melvin Village NH MLVGNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-544 4 Melvin Village NH   145J TERRA NOVA TELECOM INC. 122   2025-07-11   
603-544 5 Melvin Village NH DOVRNHTHXMX  793K TWC IP ENABLED SERVICES, LLC 122   2018-05-21   
603-545 A Concord NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122   2025-04-30   
603-545 0 Concord NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-545 1 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-10-02   
603-545 2 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-08-02   
603-545 3 Concord NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-545 4 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-12-02   
603-545 5 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-03-04   
603-545 6 Concord NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-545 7 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-07-03   
603-545 8 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-02-02   
603-545 9 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-07-02   
603-546 A Nashua NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122   2025-04-30   
603-546 0 Nashua NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-546 1 Nashua NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-546 2 Nashua NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-546 3 Nashua NH   145J TERRA NOVA TELECOM INC. 122   2025-05-07   
603-546 4 Nashua NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2005-11-11   
603-546 5 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2004-04-07   
603-546 6 Nashua NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-546 7 Nashua NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-08-29   
603-546 8 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2004-04-07   
603-546 9 Nashua NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-547 A Greenfield NH GNFDNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-547 0 Greenfield NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-01-19   
603-547 1 Greenfield NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122   2002-12-04   
603-547 2 Greenfield NH GNFDNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-547 3 Greenfield NH GNFDNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-547 4 Greenfield NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-547 5 Greenfield NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2003-05-17   
603-547 6 Greenfield NH GNFDNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-547 7 Greenfield NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-08-02   
603-547 8 Greenfield NH GNFDNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-547 9 Greenfield NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-548 A Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-549 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-550 A Dover NH MNCHNHCO22Z  073H TELNYX LLC 122      

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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