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: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-875 2 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-875 3 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-875 4 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-875 5 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-875 6 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-875 7 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-875 8 Darien CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-875 9 Darien CT NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-876 A Milford CT MLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-877 A Milford CT MLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-878 A Milford CT MLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-879 A Wolcott CT WLCTCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-880 A Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-880 0 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-880 1 Trumbull CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-880 2 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-880 3 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-880 4 Trumbull CT NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-880 5 Trumbull CT   792K CHARTER IP ENABLED SERVICES, LLC 920      
203-880 6 Trumbull CT SMFRCT0162Z  3863 CTC COMMUNICATIONS CORP. - CT 920      
203-880 7 Trumbull CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-880 8 Trumbull CT   145J TERRA NOVA TELECOM INC. 920      
203-880 9 Trumbull CT   792K CHARTER IP ENABLED SERVICES, LLC 920      
203-881 A Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 0 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 1 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 2 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 3 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 4 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 5 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 6 Seymour CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-881 7 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 8 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-881 9 Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-882 A Milford CT MLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-883 A Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-883 0 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-883 1 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-883 2 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-883 3 Stamford CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-883 4 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-883 5 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-883 6 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-883 7 Stamford CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-883 8 Stamford CT NRWLCT028MD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-883 9 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-884 A Guilford CT SMFRCTQI9MD  3493 GLOBAL CROSSING LOCAL SERVICES, INC. - CT 920      
203-884 0 Guilford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-884 1 Guilford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-884 2 Guilford CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
203-884 3 Guilford CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
203-884 4 Guilford CT   624H ONVOY SPECTRUM, LLC 920      
203-884 5 Guilford CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
203-884 6 Guilford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-884 7 Guilford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-884 8 Guilford CT HRFRCT03HMD  073H TELNYX LLC 920      
203-884 9 Guilford CT SMFRCTQI9MD  3493 GLOBAL CROSSING LOCAL SERVICES, INC. - CT 920      
203-885 A Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-885 0 Danbury CT   792K CHARTER IP ENABLED SERVICES, LLC 920      
203-885 1 Danbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-885 2 Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-885 3 Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-885 4 Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-885 5 Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-885 6 Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-885 7 Danbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-885 8 Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-885 9 Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-886 A Meriden CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-886 0 Meriden CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-886 1 Meriden CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-886 2 Meriden CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-886 3 Meriden CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-886 4 Meriden CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-886 5 Meriden CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-886 6 Meriden CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-886 7 Meriden CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-886 8 Meriden CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-886 9 Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2024-02-09   
203-887 0 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 1 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 2 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 3 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 4 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 5 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 6 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 7 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 8 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-887 9 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-888 A Seymour CT SYMRCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-889 A New Haven CT SMFRCTQI9MD  3493 GLOBAL CROSSING LOCAL SERVICES, INC. - CT 920      
203-889 0 New Haven CT SMFRCTQI9MD  3493 GLOBAL CROSSING LOCAL SERVICES, INC. - CT 920      
203-889 1 New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-889 2 New Haven CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-889 3 New Haven CT SMFRCTQI9MD  3493 GLOBAL CROSSING LOCAL SERVICES, INC. - CT 920      
203-889 4 New Haven CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-889 5 New Haven CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-889 6 New Haven CT MDTWCTNIGT1  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-889 7 New Haven CT MDTWCTNIGT1  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      

<< 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 >>

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.