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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
603-371 9 Peterborough NH   829J PAETEC ITEL, LLC 122   2000-05-24   
603-372 A Claremont NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 0 Claremont NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 1 Claremont NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 2 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-05-03   
603-372 3 Claremont NH   145J TERRA NOVA TELECOM INC. 122   2026-03-30   
603-372 4 Claremont NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 5 Claremont NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 6 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-11-03   
603-372 7 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-05-02   
603-372 9 Claremont NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-373 A Portsmouth NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-373 0 Portsmouth NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2001-01-01   
603-373 1 Portsmouth NH   829J PAETEC ITEL, LLC 122   2004-11-01   
603-373 2 Portsmouth NH MNCHNHCO37Z  7421 AT&T - LOCAL 122   2001-07-01   
603-373 3 Portsmouth NH   145J TERRA NOVA TELECOM INC. 122   2021-05-27   
603-373 4 Portsmouth NH MNCHNHCOX1Y  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2004-04-18   
603-373 5 Portsmouth NH   4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-373 6 Portsmouth NH   829J PAETEC ITEL, LLC 122      
603-373 7 Portsmouth NH   829J PAETEC ITEL, LLC 122   2005-08-05   
603-373 8 Portsmouth NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2003-02-04   
603-373 9 Portsmouth NH   829J PAETEC ITEL, LLC 122   2000-07-03   
603-374 A Bartlett NH BRTLNHGERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-374 0 Bartlett NH BRTLNHGERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-374 1 Bartlett NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2024-08-07   
603-374 2 Bartlett NH BRTLNHGERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-374 3 Bartlett NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2009-01-05   
603-374 4 Bartlett NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-09-10   
603-374 5 Bartlett NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-374 6 Bartlett NH BRTLNHGERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-374 7 Bartlett NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-03   
603-374 8 Bartlett NH   829J PAETEC ITEL, LLC 122   2007-12-06   
603-374 9 Bartlett NH   145J TERRA NOVA TELECOM INC. 122   2023-01-04   
603-375 A Ashland NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122      
603-375 0 Ashland NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-07-22   
603-375 3 Ashland NH   637E ONVOY, LLC - NH 122   2025-02-02   
603-375 4 Ashland NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-376 A Dover NH MNCHNHCO29Z  9748 AMERICAN MESSAGING SERVICES, LLC 122      
603-377 A Merrimack NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-377 0 Merrimack NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-377 1 Merrimack NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2016-11-19   
603-377 2 Merrimack NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2021-08-07   
603-377 3 Merrimack NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-01-15   
603-377 4 Merrimack NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-08-28   
603-377 5 Merrimack NH MNCHNHCO23Z  073H TELNYX LLC 122   2023-08-26   
603-377 6 Merrimack NH   5562 METROPCS, INC. 122      
603-377 7 Merrimack NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2012-04-30   
603-377 8 Merrimack NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-11-13   
603-378 A Plaistow NH PLSTNHMADS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-378 0 Plaistow NH PLSTNHMADS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-378 1 Plaistow NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2025-01-23   
603-378 2 Plaistow NH PLSTNHMADS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-378 3 Plaistow NH   145J TERRA NOVA TELECOM INC. 122   2021-12-12   
603-378 5 Plaistow NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2016-11-07   
603-378 8 Plaistow NH MNCHNHCO23Z  073H TELNYX LLC 122   2022-12-23   
603-378 9 Plaistow NH PLSTNHMADS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-379 A Rye Beach NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-379 0 Rye Beach NH   829J PAETEC ITEL, LLC 122   2001-03-27   
603-379 1 Rye Beach NH   829J PAETEC ITEL, LLC 122   2000-05-24   
603-379 2 Rye Beach NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2001-06-28   
603-379 3 Rye Beach NH   829J PAETEC ITEL, LLC 122   2001-04-02   
603-379 5 Rye Beach NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2019-06-18   
603-379 6 Rye Beach NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-07   
603-379 8 Rye Beach NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2001-10-31   
603-379 9 Rye Beach NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-02-16   
603-380 A Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 0 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 1 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 2 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 3 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 4 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 5 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 6 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 7 Portsmouth NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-10-09   
603-380 8 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2010-09-11   
603-380 9 Portsmouth NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-08-13   
603-381 A West Lebanon NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-381 0 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 1 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 2 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 3 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 4 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 5 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 6 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 7 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 8 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-381 9 West Lebanon NH   6290 UNITED STATES CELLULAR - NH 122      
603-382 A Plaistow NH PLSTNHMADS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-383 A Jackson NH JCSNNHTHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-383 0 Jackson NH JCSNNHTHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-383 1 Jackson NH   829J PAETEC ITEL, LLC 122   2000-05-24   
603-383 2 Jackson NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2015-05-01   
603-383 3 Jackson NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-383 4 Jackson NH JCSNNHTHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-383 5 Jackson NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-383 6 Jackson NH JCSNNHTHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-383 7 Jackson NH   145J TERRA NOVA TELECOM INC. 122   2023-11-16   
603-383 8 Jackson NH JCSNNHTHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-383 9 Jackson NH JCSNNHTHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-384 A Goffstown NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      

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Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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