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
603-425 2 Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-425 3 Derry NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-425 4 Derry NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-425 5 Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-425 6 Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-425 7 Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-425 8 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-425 9 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-426 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-426 0 Derry NH   145J TERRA NOVA TELECOM INC. 122      
603-426 1 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-426 2 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-426 5 Derry NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-426 8 Derry NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-426 9 Derry NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 A Portsmouth NH PTMONHISPS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 0 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 1 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 2 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 3 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 4 Portsmouth NH PTMONHISPS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 5 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 6 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 7 Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 8 Portsmouth NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-427 9 Portsmouth NH PTMONH07DS1  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-428 A Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 0 Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 2 Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 3 Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 6 Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 7 Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 8 Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 9 Henniker NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-429 A Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-430 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-431 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-432 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-433 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-434 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 A Pittsfield NH PTFDNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 0 Pittsfield NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122      
603-435 1 Pittsfield NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-435 2 Pittsfield NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-435 3 Pittsfield NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-435 4 Pittsfield NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-435 5 Pittsfield NH PTFDNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 6 Pittsfield NH PTFDNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 7 Pittsfield NH PTFDNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 8 Pittsfield NH PTFDNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 9 Pittsfield NH PTFDNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-436 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-437 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-438 A Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2024-02-09   
603-438 0 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 1 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 2 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 3 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 4 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 5 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 6 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 7 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 8 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 9 Nashua NH MNCHNHNI9MD  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-439 A Keene NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-439 0 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-439 1 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-439 2 Keene NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-439 3 Keene NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-439 4 Keene NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-439 6 Keene NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-439 7 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-439 8 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-439 9 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-440 A Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-440 0 Merrimack NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-440 1 Merrimack NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-440 2 Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-440 3 Merrimack NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-440 4 Merrimack NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-440 5 Merrimack NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-440 6 Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-440 7 Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-440 8 Merrimack NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-440 9 Merrimack NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-441 A Rochester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-441 0 Rochester NH MNCHNHAC3MD  939H COMMIO, LLC 122      
603-441 1 Rochester NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122      
603-441 2 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-441 3 Rochester NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122      
603-441 4 Rochester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-441 5 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-441 6 Rochester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-441 7 Rochester NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122      
603-441 8 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-441 9 Rochester NH MNCHNHAC3MD  939H COMMIO, LLC 122      
603-442 A Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-442 0 Lebanon NH PTMONH07DS1  9827 OTEL TELEKOM, INC. - NH 122      
603-442 1 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-442 2 Lebanon NH LBNNNHBARS1  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 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.