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
603-504 8 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-504 9 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122   2020-04-10   
603-505 A Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-505 0 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2002-11-30   
603-505 1 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2003-08-03   
603-505 2 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2003-11-19   
603-505 3 Derry NH   145J TERRA NOVA TELECOM INC. 122   2022-08-04   
603-505 4 Derry NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2003-01-01   
603-505 5 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2003-03-08   
603-505 6 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-03-18   
603-505 7 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-08-02   
603-505 8 Derry NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-02-08   
603-505 9 Derry NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2005-05-16   
603-506 A Manchester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-506 0 Manchester NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2019-08-07   
603-506 1 Manchester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2020-05-11   
603-506 2 Manchester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2020-04-12   
603-506 3 Manchester NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2019-09-16   
603-506 4 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2019-09-20   
603-506 5 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2019-09-20   
603-506 6 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2019-08-06   
603-506 7 Manchester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2019-03-20   
603-506 8 Manchester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2018-12-13   
603-506 9 Manchester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2018-12-13   
603-507 A Rochester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-507 0 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2016-05-01   
603-507 1 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-05-12   
603-507 2 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-09-11   
603-507 3 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2018-06-05   
603-507 4 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2016-01-29   
603-507 5 Rochester NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2017-01-21   
603-507 6 Rochester NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2017-12-22   
603-507 7 Rochester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2016-07-02   
603-507 8 Rochester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2015-11-20   
603-507 9 Rochester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2015-09-11   
603-508 A Pelham NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-508 0 Pelham NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-508 1 Pelham NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-508 2 Pelham NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2003-03-11   
603-508 3 Pelham NH   829J PAETEC ITEL, LLC 122   2003-06-04   
603-508 4 Pelham NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2016-03-27   
603-508 5 Pelham NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2011-10-27   
603-508 6 Pelham NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-10-31   
603-508 7 Pelham NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-508 8 Pelham NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-508 9 Pelham NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-509 A Rochester NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-509 0 Rochester NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2006-03-18   
603-509 1 Rochester NH   829J PAETEC ITEL, LLC 122   2001-11-29   
603-509 2 Rochester NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-05-02   
603-509 3 Rochester NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-05-02   
603-509 4 Rochester NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-509 6 Rochester NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2014-12-15   
603-509 7 Rochester NH   145J TERRA NOVA TELECOM INC. 122   2023-12-06   
603-509 8 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2015-09-01   
603-509 9 Rochester NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2010-10-02   
603-510 A Meriden NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-510 0 Meriden NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2010-06-25   
603-512 A Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2024-02-09   
603-512 0 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 1 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 2 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 3 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 4 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 5 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 6 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 7 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 8 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-512 9 Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-513 A Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-513 0 Concord NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122      
603-513 1 Concord NH   829J PAETEC ITEL, LLC 122   2005-05-19   
603-513 2 Concord NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-513 3 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2015-05-01   
603-513 4 Concord NH   6386 BELL ATLANTIC MOBILE, INC 122   2026-01-14   
603-513 5 Concord NH   829J PAETEC ITEL, LLC 122   2006-05-19   
603-513 6 Concord NH   829J PAETEC ITEL, LLC 122   2005-11-01   
603-513 7 Concord NH   829J PAETEC ITEL, LLC 122   2006-05-19   
603-513 8 Concord NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2007-12-17   
603-513 9 Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2014-06-01   
603-514 A Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-514 0 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2021-03-07   
603-514 1 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2021-03-07   
603-514 2 Nashua NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-05-07   
603-514 3 Nashua NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2021-11-03   
603-514 4 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-04-18   
603-514 5 Nashua NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2021-03-08   
603-514 6 Nashua NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-01-15   
603-514 7 Nashua NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2022-01-28   
603-514 8 Nashua NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2021-11-02   
603-514 9 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2021-11-02   
603-515 A Wolfeboro NH WLBONHGSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-515 0 Wolfeboro NH   145J TERRA NOVA TELECOM INC. 122   2023-04-27   
603-515 1 Wolfeboro NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122   2008-04-18   
603-515 2 Wolfeboro NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2005-09-22   
603-515 3 Wolfeboro NH WLBONHGSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-515 4 Wolfeboro NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-515 5 Wolfeboro NH MNCHNHCO23Z  073H TELNYX LLC 122   2023-10-16   
603-515 6 Wolfeboro NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2009-01-05   
603-515 7 Wolfeboro NH DOVRNHTHXMX  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   

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

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