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 24 25 26 27 28 29 30 31 32 33 34 35 36 37 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-588 0 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-04-25   
331-588 1 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-05-21   
331-588 2 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-04-15   
331-588 3 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-07-29   
331-588 4 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-10-21   
331-588 5 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-30   
331-588 6 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-09-23   
331-588 7 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-06-16   
331-588 8 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-01-06   
331-588 9 Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-04-15   
331-600 A Wheaton IL CHCGILWURMD  965H FRACTEL LLC 358      
331-600 0 Wheaton IL CHCGILWURMD  965H FRACTEL LLC 358   2019-10-02   
331-600 1 Wheaton IL CHCGIL24XMD  495J STRATUS NETWORKS 358   2020-09-26   
331-600 3 Wheaton IL CHCGILNEXIX  506J TWILIO INTERNATIONAL INC 358   2021-04-13   
331-600 4 Wheaton IL   6529 T-MOBILE USA, INC. 358   2022-05-26   
331-600 5 Wheaton IL   6529 T-MOBILE USA, INC. 358   2022-05-26   
331-600 6 Wheaton IL CHCGILWURMD  965H FRACTEL LLC 358   2019-10-02   
331-600 8 Wheaton IL CHCGIL245MD  073H TELNYX LLC 358   2021-02-27   
331-600 9 Wheaton IL CHCGILTCDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2021-03-22   
331-625 A Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-625 0 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2009-12-18   
331-625 1 Downers Grove IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-04-26   
331-625 2 Downers Grove IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-07-19   
331-625 3 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-10-20   
331-625 4 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-10-20   
331-625 5 Downers Grove IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-10-24   
331-625 6 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-09-03   
331-625 7 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-09-03   
331-625 8 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-09-03   
331-625 9 Downers Grove IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-06-28   
331-627 A Lombard IL   516J TON80 COMMUNICATIONS LLC 358   2022-04-29   
331-627 0 Lombard IL   6529 T-MOBILE USA, INC. 358   2022-04-30   
331-627 1 Lombard IL   6529 T-MOBILE USA, INC. 358   2022-04-30   
331-627 2 Lombard IL   6529 T-MOBILE USA, INC. 358   2022-04-30   
331-627 3 Lombard IL   6529 T-MOBILE USA, INC. 358   2022-04-30   
331-627 4 Lombard IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2022-06-09   
331-627 5 Lombard IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2022-06-09   
331-627 7 Lombard IL   516J TON80 COMMUNICATIONS LLC 358   2022-04-29   
331-642 A Elmhurst IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-642 0 Elmhurst IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-12   
331-642 1 Elmhurst IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-04-18   
331-642 2 Elmhurst IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358   2010-07-15   
331-642 3 Elmhurst IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358   2010-07-15   
331-642 4 Elmhurst IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358   2010-07-15   
331-642 5 Elmhurst IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358   2010-07-15   
331-642 6 Elmhurst IL CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2010-04-09   
331-642 7 Elmhurst IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-08-14   
331-642 8 Elmhurst IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-11-27   
331-642 9 Elmhurst IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358   2011-08-29   
331-643 A Aurora IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358      

<< 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 >>

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.