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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-468 9 Seabrook NH   145J TERRA NOVA TELECOM INC. 122   2025-10-21   
603-469 A Meriden NH MRDNNHXAPS0  0045 KEARSARGE TEL. CO. 122      
603-469 0 Meriden NH MRDNNHXAPS0  0045 KEARSARGE TEL. CO. 122      
603-469 2 Meriden NH MRDNNHXAPS0  0045 KEARSARGE TEL. CO. 122      
603-469 3 Meriden NH MRDNNHXAPS0  0045 KEARSARGE TEL. CO. 122      
603-469 9 Meriden NH   145J TERRA NOVA TELECOM INC. 122   2025-07-11   
603-470 A Concord NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-470 0 Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2014-03-22   
603-470 1 Concord NH CNCRNHSODS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2012-12-12   
603-470 2 Concord NH CNCRNHSODS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2012-12-12   
603-470 3 Concord NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-470 4 Concord NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-470 5 Concord NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-470 6 Concord NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-470 7 Concord NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-470 8 Concord NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-470 9 Concord NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-471 A Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-471 0 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-471 1 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-471 2 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-471 3 Bedford NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-03   
603-471 4 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-471 5 Bedford NH MNCHNHCO23Z  073H TELNYX LLC 122   2023-01-15   
603-471 6 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-471 7 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-471 9 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 A Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 0 Bedford NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2026-03-09   
603-472 1 Bedford NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122   2001-09-10   
603-472 2 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 3 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 4 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 5 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 6 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 7 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 8 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-472 9 Bedford NH BDFRNHAMRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-473 A Milton Mills NH MTMLNHWERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-473 1 Milton Mills NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122   2008-04-18   
603-473 2 Milton Mills NH MTMLNHWERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-473 3 Milton Mills NH MNCHNHBO2MD  490J BOOST SUBSCRIBERCO L.L.C. 122   2023-10-28   
603-473 4 Milton Mills NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-473 5 Milton Mills NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2001-02-06   
603-473 6 Milton Mills NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-08-02   
603-473 7 Milton Mills NH DOVRNHTHXMX  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-473 8 Milton Mills NH MTMLNHWERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-473 9 Milton Mills NH MTMLNHWERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2014-06-20   
603-474 A Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-474 0 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 >>

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.