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
331-228 4 Geneva IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-228 5 Geneva IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-228 6 Geneva IL   829J PAETEC ITEL, LLC 358      
331-228 7 Geneva IL   829J PAETEC ITEL, LLC 358      
331-228 8 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-228 9 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-229 A Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-229 0 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-229 1 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-229 2 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-229 3 Naperville IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-229 4 Naperville IL CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358      
331-229 5 Naperville IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
331-229 6 Naperville IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-229 7 Naperville IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-229 8 Naperville IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-229 9 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-230 A Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-230 0 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-230 1 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-230 2 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-230 3 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-230 4 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-230 5 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-230 6 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-230 7 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-230 8 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-230 9 Aurora IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-231 A Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-231 0 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-231 1 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-231 2 Naperville IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-231 3 Naperville IL CHCGILWUIMD  197D VONAGE AMERICA LLC 358      
331-231 4 Naperville IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
331-231 5 Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-231 6 Naperville IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
331-231 7 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-231 8 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-231 9 Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-232 A West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-232 0 West Chicago IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-232 1 West Chicago IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-232 2 West Chicago IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-232 3 West Chicago IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-232 4 West Chicago IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-232 5 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-232 6 West Chicago IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-232 7 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-232 8 West Chicago IL CHCGIL24XMD  495J STRATUS NETWORKS 358      
331-232 9 West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-233 A Downers Grove IL CHCGILCNHMD  073H TELNYX LLC 358      
331-233 0 Downers Grove IL CHCGILCNHMD  073H TELNYX LLC 358      
331-233 1 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-233 2 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-233 3 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-233 4 Downers Grove IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-233 5 Downers Grove IL   829J PAETEC ITEL, LLC 358      
331-233 6 Downers Grove IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-233 7 Downers Grove IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
331-233 8 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-233 9 Downers Grove IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-234 A Sugar Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-234 0 Sugar Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-234 1 Sugar Grove IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-234 2 Sugar Grove IL CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358      
331-234 3 Sugar Grove IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-234 4 Sugar Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-234 5 Sugar Grove IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-234 6 Sugar Grove IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-234 7 Sugar Grove IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-234 8 Sugar Grove IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-234 9 Sugar Grove IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-235 A Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-235 0 Geneva IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-235 1 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-235 2 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-235 3 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-235 4 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-235 5 Geneva IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-235 6 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-235 7 Geneva IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-235 8 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-235 9 Geneva IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-236 A Wheaton IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-236 0 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-236 1 Wheaton IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-236 2 Wheaton IL CHCGILWUIMD  197D VONAGE AMERICA LLC 358      
331-236 3 Wheaton IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
331-236 4 Wheaton IL CHCGILWUIMD  197D VONAGE AMERICA LLC 358      
331-236 5 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-236 6 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-236 7 Wheaton IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
331-236 8 Wheaton IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-236 9 Wheaton IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358      
331-237 A Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-237 0 Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-237 1 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-237 2 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-237 3 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358      
331-237 4 Naperville IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 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: LES.NET

Like this site? We accept donations via PayPal.