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: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-645 3 Elmhurst IL CHCGILMF4MD  5562 METROPCS, INC. 358      
331-645 4 Elmhurst IL CHCGILMF4MD  5562 METROPCS, INC. 358      
331-645 5 Elmhurst IL CHCGILMF4MD  5562 METROPCS, INC. 358      
331-645 6 Elmhurst IL CHCGILMF4MD  5562 METROPCS, INC. 358      
331-645 7 Elmhurst IL CHCGILMF4MD  5562 METROPCS, INC. 358      
331-645 8 Elmhurst IL CHCGILMF4MD  5562 METROPCS, INC. 358      
331-645 9 Elmhurst IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-666 A Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-666 0 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-666 1 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-666 2 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-666 3 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-666 4 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-666 5 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-666 6 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-666 7 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-666 8 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-666 9 Aurora IL CHCGIL24XMD  495J STRATUS NETWORKS 358      
331-684 A Aurora IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
331-684 0 Aurora IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
331-684 1 Aurora IL CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358      
331-684 2 Aurora IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
331-684 5 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-684 6 Aurora IL CHCGILCNDS1  8709 GLOBAL CROSSING LOCAL SERVICES, INC. - IL 358      
331-684 7 Aurora IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-684 8 Aurora IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-684 9 Aurora IL   829J PAETEC ITEL, LLC 358      
331-688 A Naperville IL CHCGILWUTMD  516J TON80 COMMUNICATIONS, LLC 358      
331-688 0 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-688 1 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-688 2 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-688 3 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-688 4 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-688 5 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-688 6 Naperville IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-688 7 Naperville IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-688 8 Naperville IL CHCGILWUTMD  516J TON80 COMMUNICATIONS, LLC 358      
331-688 9 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-701 A Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-701 0 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-701 1 Naperville IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-701 2 Naperville IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-701 3 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-701 4 Naperville IL   460K FIRST COMMUNICATIONS, LLC 358      
331-701 5 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-701 6 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-701 7 Naperville IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-701 8 Naperville IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-701 9 Naperville IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-702 A Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-702 0 Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-702 1 Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-702 2 Naperville IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-702 3 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-702 4 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-702 5 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-702 6 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-702 7 Naperville IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
331-702 8 Naperville IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
331-702 9 Naperville IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-703 A West Chicago IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-703 0 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-703 1 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-703 2 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-703 3 West Chicago IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-703 4 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-703 5 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-703 6 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-703 7 West Chicago IL CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358      
331-703 8 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-703 9 West Chicago IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-704 A Kaneville IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-704 0 Kaneville IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-704 1 Kaneville IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-704 2 Kaneville IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-704 3 Kaneville IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-704 4 Kaneville IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-704 7 Kaneville IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-704 8 Kaneville IL CHCGILWUJMD  073H TELNYX LLC 358      
331-704 9 Kaneville IL CHCGIL24XMD  495J STRATUS NETWORKS 358      
331-707 A Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-707 0 Aurora IL CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358      
331-707 1 Aurora IL CHCGILCLXOX  516C AT&T CORP. 358      
331-707 2 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-707 3 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-707 4 Aurora IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-707 5 Aurora IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-707 6 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-707 7 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-707 8 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-707 9 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-716 A Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-716 0 Wheaton IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-716 1 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-716 2 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-716 3 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-716 4 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-716 5 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-716 6 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-716 7 Wheaton IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 >>

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.