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 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-704 4 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-08-02   
603-704 5 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-11-13   
603-704 6 Derry NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2019-04-25   
603-704 7 Derry NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2019-04-25   
603-704 8 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-05-20   
603-704 9 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-05-20   
603-705 A Salisbury NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-705 0 Salisbury NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2010-01-25   
603-705 8 Salisbury NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-03-11   
603-705 9 Salisbury NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-03-11   
603-706 A Raymond NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-706 0 Raymond NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-08-01   
603-706 1 Raymond NH MNCHNHCOX9Y  2698 CTC COMMUNICATIONS CORP. - NH 122   2004-06-18   
603-706 2 Raymond NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-12-02   
603-706 3 Raymond NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-04-01   
603-706 4 Raymond NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2007-09-17   
603-706 5 Raymond NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2008-10-10   
603-706 6 Raymond NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-706 7 Raymond NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-08-09   
603-706 8 Raymond NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2004-11-15   
603-706 9 Raymond NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2016-05-11   
603-707 A Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-707 0 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-04-11   
603-707 1 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-03-04   
603-707 2 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-10-02   
603-707 3 Meredith NH MNCHNHCOX9Y  2698 CTC COMMUNICATIONS CORP. - NH 122   2006-07-31   
603-707 4 Meredith NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-707 5 Meredith NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2006-09-17   
603-707 6 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-09-01   
603-707 7 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-01-02   
603-707 8 Meredith NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2004-11-15   
603-707 9 Meredith NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-02-06   
603-708 A Canterbury NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-708 1 Canterbury NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2005-04-11   
603-708 2 Canterbury NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122   2015-05-30   
603-708 3 Canterbury NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2023-03-10   
603-709 A Plainfield NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-709 0 Plainfield NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-07-06   
603-709 2 Plainfield NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-01-15   
603-709 3 Plainfield NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-04-20   
603-709 4 Plainfield NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-10-08   
603-709 5 Plainfield NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-12-23   
603-709 6 Plainfield NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-08-02   
603-709 7 Plainfield NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-10-31   
603-709 8 Plainfield NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-05-23   
603-710 A Washington NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-710 0 Washington NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2023-07-02   
603-710 8 Washington NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-04-16   
603-710 9 Washington NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-04-16   
603-712 A Pike NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

<< 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 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.