Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-945 7 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2018-09-11   
603-945 8 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2018-09-11   
603-945 9 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2018-12-07   
603-947 A Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-947 0 Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-947 1 Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-947 2 Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-947 3 Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-947 4 Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-947 5 Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-947 6 Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-947 7 Plymouth NH   145J TERRA NOVA TELECOM INC. 122   2024-05-09   
603-947 9 Plymouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-948 A Rochester NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122      
603-948 0 Rochester NH MNCHNHNI9MD  5562 METROPCS, INC. 122   2011-03-29   
603-948 1 Rochester NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122   2009-09-20   
603-948 2 Rochester NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122   2008-04-13   
603-948 3 Rochester NH   145J TERRA NOVA TELECOM INC. 122   2024-05-24   
603-948 4 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-01-04   
603-948 5 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2014-05-01   
603-948 6 Rochester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2013-03-26   
603-948 7 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2014-11-01   
603-948 8 Rochester NH MNCHNHNI9MD  5562 METROPCS, INC. 122   2013-10-19   
603-948 9 Rochester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-09-24   
603-951 A Milan NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-951 0 Milan NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-07-01   
603-951 4 Milan NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-952 A Salem NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-952 0 Salem NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2017-11-21   
603-952 1 Salem NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2015-11-23   
603-952 2 Salem NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122   2010-06-30   
603-952 3 Salem NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2010-09-27   
603-952 4 Salem NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-952 5 Salem NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2012-10-05   
603-952 6 Salem NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2012-10-05   
603-952 7 Salem NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-06-19   
603-952 8 Salem NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-10-16   
603-952 9 Salem NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2013-12-05   
603-953 A Dover NH DOVRNHTH8MD  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-953 0 Dover NH DOVRNHTH8MD  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-953 1 Dover NH DOVRNHTH8MD  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-953 2 Dover NH DOVRNHTH8MD  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-953 3 Dover NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-12-03   
603-953 4 Dover NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-11-22   
603-953 5 Dover NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-11-02   
603-953 6 Dover NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-09-01   
603-953 7 Dover NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2008-02-03   
603-953 8 Dover NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-04-14   
603-953 9 Dover NH DOVRNHTH8MD  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-956 A Portsmouth NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122      
603-956 0 Portsmouth NH MNCHNHAC3MD  939H COMMIO, LLC 122   2022-11-24   
603-956 1 Portsmouth NH MNCHNHCO23Z  073H TELNYX LLC 122   2022-12-15   
603-956 2 Portsmouth NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2022-09-23   
603-956 3 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-09-29   
603-956 4 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-09-29   
603-956 5 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-12-23   
603-956 6 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-08-20   
603-956 7 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-05-08   
603-956 8 Portsmouth NH   8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2024-01-02   
603-956 9 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-06-23   
603-957 A Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-957 0 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-957 1 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-957 2 Portsmouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2015-11-28   
603-957 3 Portsmouth NH DOVRNHTH8MD  2698 CTC COMMUNICATIONS CORP. - NH 122   2006-03-20   
603-957 4 Portsmouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2008-09-24   
603-957 5 Portsmouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2009-07-15   
603-957 6 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2011-06-19   
603-957 7 Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2011-06-19   
603-957 8 Portsmouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2009-07-03   
603-957 9 Portsmouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-02-17   
603-960 A Campton NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-960 0 Campton NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-03-16   
603-960 1 Campton NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-07-03   
603-960 2 Campton NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-10-03   
603-960 3 Campton NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-09-14   
603-960 4 Campton NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2011-05-14   
603-960 8 Campton NH   073H TELNYX LLC 122   2024-07-27   
603-960 9 Campton NH   793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-961 A Chichester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-961 0 Chichester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2010-01-25   
603-964 A Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 0 Rye Beach NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2011-11-04   
603-964 1 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 2 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 3 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 4 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 5 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 6 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 7 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 8 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-964 9 Rye Beach NH RYBHNHCEDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-965 A Derry NH MNCHNHCOX9Y  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-965 0 Derry NH MNCHNHCOX9Y  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-965 1 Derry NH MNCHNHCOX9Y  2527 CHOICE ONE OF NEW HAMPSHIRE, INC. 122      
603-965 2 Derry NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-09-10   
603-965 3 Derry NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-11-30   
603-965 4 Derry NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-11-30   
603-965 5 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-03-04   
603-965 6 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-07-02   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 >>

Last updated: Sun, 06 Oct 2024 02:51:32 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.