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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
603-378 A Plaistow NH PLSTNHMADS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-378 0 Plaistow NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-378 1 Plaistow NH   637E ONVOY, LLC - NH 122   2025-01-23   
603-378 2 Plaistow NH   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   318J COMCAST IP PHONE, LLC 122   2016-11-07   
603-378 8 Plaistow NH   073H TELNYX LLC 122   2022-12-23   
603-378 9 Plaistow NH   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   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   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2019-06-18   
603-379 6 Rye Beach NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-07   
603-379 7 Rye Beach NH   829J PAETEC ITEL, LLC 122   2004-02-17   
603-379 8 Rye Beach NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2001-10-31   
603-379 9 Rye Beach NH   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   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 1 Portsmouth NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 2 Portsmouth NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 3 Portsmouth NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 4 Portsmouth NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 5 Portsmouth NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 6 Portsmouth NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-380 7 Portsmouth NH   318J COMCAST IP PHONE, LLC 122   2015-10-09   
603-380 8 Portsmouth NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2010-09-11   
603-380 9 Portsmouth NH   318J COMCAST IP PHONE, LLC 122   2015-08-13   
603-381 A West Lebanon NH MNCHNHCOX4Z  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   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   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2015-05-01   
603-383 3 Jackson NH   793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-383 4 Jackson NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-383 5 Jackson NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-383 6 Jackson NH   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   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-383 9 Jackson NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-384 A Goffstown NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-384 0 Goffstown NH   6386 BELL ATLANTIC MOBILE, INC 122   2018-10-26   
603-384 1 Goffstown NH   318J COMCAST IP PHONE, LLC 122      
603-384 2 Goffstown NH   318J COMCAST IP PHONE, LLC 122      
603-384 3 Goffstown NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-384 4 Goffstown NH   8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2002-11-15   
603-384 5 Goffstown NH   318J COMCAST IP PHONE, LLC 122      
603-384 6 Goffstown NH   6386 BELL ATLANTIC MOBILE, INC 122   2022-12-15   
603-384 8 Goffstown NH   6386 BELL ATLANTIC MOBILE, INC 122   2023-12-15   
603-384 9 Goffstown NH   073H TELNYX LLC 122   2023-02-03   
603-385 A Manchester NH MNCHNHCODS2  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-386 A Salem NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-386 0 Salem NH   829J PAETEC ITEL, LLC 122      
603-386 1 Salem NH   6386 BELL ATLANTIC MOBILE, INC 122   2018-09-20   
603-386 2 Salem NH   829J PAETEC ITEL, LLC 122      
603-386 3 Salem NH   829J PAETEC ITEL, LLC 122      
603-386 5 Salem NH   829J PAETEC ITEL, LLC 122      
603-386 6 Salem NH   829J PAETEC ITEL, LLC 122      
603-386 7 Salem NH   829J PAETEC ITEL, LLC 122      
603-386 8 Salem NH   6386 BELL ATLANTIC MOBILE, INC 122   2018-11-07   
603-386 9 Salem NH   829J PAETEC ITEL, LLC 122      
603-387 A Laconia NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-388 A Colebrook NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-388 0 Colebrook NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-388 1 Colebrook NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-388 2 Colebrook NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-388 4 Colebrook NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-389 A Durham NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-389 0 Durham NH   829J PAETEC ITEL, LLC 122   2001-03-26   
603-389 1 Durham NH   829J PAETEC ITEL, LLC 122   2005-02-18   
603-389 2 Durham NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2007-07-23   
603-389 3 Durham NH   9827 OTEL TELEKOM, INC. - NH 122   2006-08-22   
603-389 4 Durham NH   829J PAETEC ITEL, LLC 122      
603-389 5 Durham NH   829J PAETEC ITEL, LLC 122      
603-389 6 Durham NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2010-09-27   
603-389 7 Durham NH   6386 BELL ATLANTIC MOBILE, INC 122   2015-11-15   
603-389 8 Durham NH   314C IDT AMERICA, CORP. - NH 122   2008-04-18   
603-389 9 Durham NH   829J PAETEC ITEL, LLC 122   2000-09-01   
603-390 A Jefferson NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-390 2 Jefferson NH   145J TERRA NOVA TELECOM INC. 122   2023-11-11   
603-390 6 Jefferson NH   145J TERRA NOVA TELECOM INC. 122   2024-10-11   
603-390 9 Jefferson NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-391 A Manchester NH MNCHNHCOX1Y  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122      
603-391 0 Manchester NH   8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122      
603-391 1 Manchester NH   6386 BELL ATLANTIC MOBILE, INC 122   2004-09-29   
603-391 2 Manchester NH   6386 BELL ATLANTIC MOBILE, INC 122   2005-03-04   
603-391 3 Manchester NH   8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2004-01-18   
603-391 4 Manchester NH   6386 BELL ATLANTIC MOBILE, INC 122   2005-05-02   
603-391 5 Manchester NH   6386 BELL ATLANTIC MOBILE, INC 122   2005-06-02   
603-391 6 Manchester NH   6386 BELL ATLANTIC MOBILE, INC 122   2005-08-01   
603-391 7 Manchester NH   6386 BELL ATLANTIC MOBILE, INC 122   2005-08-01   
603-391 8 Manchester NH   6386 BELL ATLANTIC MOBILE, INC 122   2005-01-02   
603-391 9 Manchester NH   6386 BELL ATLANTIC MOBILE, INC 122   2005-01-02   
603-392 A Winchester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-392 0 Winchester NH   318J COMCAST IP PHONE, LLC 122   2007-01-29   
603-392 1 Winchester NH   073H TELNYX LLC 122   2024-07-04   
603-392 2 Winchester NH   793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-392 7 Winchester NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2016-04-08   

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

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