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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
603-560 A Salem NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 0 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 1 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 2 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 3 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 4 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 5 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 6 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 7 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 8 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-560 9 Salem NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2011-06-15   
603-561 A Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-562 A Peterborough NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-562 0 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122   2009-02-05   
603-562 1 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122   2016-08-11   
603-562 2 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122   2020-12-25   
603-562 4 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122   2014-02-16   
603-562 5 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122      
603-562 6 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122      
603-562 7 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122      
603-562 8 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122      
603-562 9 Peterborough NH   6290 UNITED STATES CELLULAR - NH 122      
603-563 A Dublin NH DBLNNHMORS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-563 0 Dublin NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-563 1 Dublin NH   829J PAETEC ITEL, LLC 122   2005-07-23   
603-563 3 Dublin NH   793K TWC IP ENABLED SERVICES, LLC 122   2025-04-20   
603-563 5 Dublin NH   145J TERRA NOVA TELECOM INC. 122   2022-10-06   
603-563 7 Dublin NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-563 8 Dublin NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-563 9 Dublin NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-564 A Manchester NH MNCHNHCODS2  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-565 A Penacook NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-565 0 Penacook NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-09-15   
603-565 1 Penacook NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2006-05-20   
603-565 2 Penacook NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2002-09-20   
603-565 3 Penacook NH   314C IDT AMERICA, CORP. - NH 122   2023-04-30   
603-565 4 Penacook NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-565 5 Penacook NH   318J COMCAST IP PHONE, LLC 122   2012-05-18   
603-565 9 Penacook NH   073H TELNYX LLC 122   2024-07-04   
603-566 A Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-567 A Peterborough NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-567 0 Peterborough NH   073H TELNYX LLC 122   2024-07-04   
603-567 4 Peterborough NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-567 7 Peterborough NH   318J COMCAST IP PHONE, LLC 122   2015-04-28   
603-567 8 Peterborough NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2025-03-14   
603-568 A Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-568 0 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2002-09-27   
603-568 1 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2002-09-27   
603-568 2 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2002-09-27   
603-568 3 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2002-09-27   
603-568 4 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2003-08-03   
603-568 5 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2003-09-03   
603-568 6 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2003-11-03   
603-568 7 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2004-01-19   
603-568 8 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2003-05-10   
603-568 9 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2004-04-01   
603-569 A Wolfeboro NH WLBONHGSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-570 A Portsmouth NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122      
603-570 0 Portsmouth NH   8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2014-03-10   
603-570 1 Portsmouth NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2015-08-11   
603-570 2 Portsmouth NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2006-10-17   
603-570 3 Portsmouth NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2001-07-13   
603-570 4 Portsmouth NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2001-07-13   
603-570 5 Portsmouth NH   829J PAETEC ITEL, LLC 122   2004-11-18   
603-570 6 Portsmouth NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2012-03-30   
603-570 7 Portsmouth NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2007-06-13   
603-570 8 Portsmouth NH   6386 BELL ATLANTIC MOBILE, INC 122   2018-01-10   
603-570 9 Portsmouth NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-571 A Derry NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2024-01-05   
603-571 0 Derry NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-571 1 Derry NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-571 2 Derry NH   145J TERRA NOVA TELECOM INC. 122   2024-02-02   
603-571 3 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-09-06   
603-571 4 Derry NH   073H TELNYX LLC 122   2024-01-15   
603-571 5 Derry NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-571 6 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-12-26   
603-571 7 Derry NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-571 8 Derry NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-571 9 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-04-23   
603-573 A Concord NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-573 0 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2014-09-01   
603-573 1 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2013-10-01   
603-573 2 Concord NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2012-12-12   
603-573 3 Concord NH   7421 AT&T - LOCAL 122   2000-12-15   
603-573 4 Concord NH   7421 AT&T - LOCAL 122   2002-09-09   
603-573 5 Concord NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2007-07-09   
603-573 6 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2013-01-31   
603-573 7 Concord NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2012-12-12   
603-573 8 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2017-09-19   
603-573 9 Concord NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-574 A Alstead NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-574 0 Alstead NH   939H COMMIO, LLC 122   2022-11-05   
603-574 4 Alstead NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-575 A Littleton NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-575 0 Littleton NH   8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2019-05-17   
603-575 1 Littleton NH   6386 BELL ATLANTIC MOBILE, INC 122   2019-07-08   
603-575 3 Littleton NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2025-12-23   
603-575 5 Littleton NH   793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-575 6 Littleton NH   829J PAETEC ITEL, LLC 122   2013-10-21   
603-575 7 Littleton NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2025-03-14   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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