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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-575 8 Aurora IL   6529 T-MOBILE USA, INC. 358   2010-05-07   
331-575 9 Aurora IL   6529 T-MOBILE USA, INC. 358   2008-07-28   
331-588 A Geneva IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-588 0 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-04-25   
331-588 1 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-05-21   
331-588 2 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-04-15   
331-588 3 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-07-29   
331-588 4 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-10-21   
331-588 5 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-30   
331-588 6 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-09-23   
331-588 7 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-06-16   
331-588 8 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-01-06   
331-588 9 Geneva IL   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   965H FRACTEL, LLC 358   2019-10-02   
331-600 1 Wheaton IL   495J STRATUS NETWORKS 358   2020-09-26   
331-600 2 Wheaton IL   6529 T-MOBILE USA, INC. 358   2022-09-25   
331-600 3 Wheaton IL   624H ONVOY SPECTRUM, LLC 358   2025-05-12   
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   965H FRACTEL, LLC 358   2019-10-02   
331-600 7 Wheaton IL   6529 T-MOBILE USA, INC. 358   2022-09-25   
331-600 8 Wheaton IL   073H TELNYX LLC 358   2021-02-27   
331-600 9 Wheaton IL   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   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2009-12-18   
331-625 1 Downers Grove IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-04-26   
331-625 2 Downers Grove IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-07-19   
331-625 3 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-10-20   
331-625 4 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-10-20   
331-625 5 Downers Grove IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-10-24   
331-625 6 Downers Grove IL   224C ONVOY, LLC 358   2010-09-03   
331-625 7 Downers Grove IL   224C ONVOY, LLC 358   2010-09-03   
331-625 8 Downers Grove IL   224C ONVOY, LLC 358   2010-09-03   
331-625 9 Downers Grove IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2010-06-28   
331-627 A Lombard IL CHCGILWUTMD  516J TON80 COMMUNICATIONS, LLC 358      
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 6 Lombard IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-20   
331-627 7 Lombard IL   516J TON80 COMMUNICATIONS, LLC 358   2022-04-29   
331-627 8 Lombard IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-05-27   
331-627 9 Lombard IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-05-27   
331-631 A Downers Grove IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-631 0 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2022-09-10   
331-631 1 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2022-09-10   
331-631 2 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2022-09-10   
331-631 3 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2022-09-10   
331-631 4 Downers Grove IL   318J COMCAST IP PHONE, LLC 358   2022-10-29   
331-631 5 Downers Grove IL   318J COMCAST IP PHONE, LLC 358   2022-10-29   
331-631 6 Downers Grove IL   624H ONVOY SPECTRUM, LLC 358   2022-09-09   
331-631 7 Downers Grove IL   624H ONVOY SPECTRUM, LLC 358   2022-09-09   
331-631 8 Downers Grove IL   624H ONVOY SPECTRUM, LLC 358   2022-09-09   
331-631 9 Downers Grove IL   624H ONVOY SPECTRUM, LLC 358   2022-09-09   
331-642 A Elmhurst IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-642 0 Elmhurst IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2008-12-12   
331-642 1 Elmhurst IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-04-18   
331-642 2 Elmhurst IL   5562 METROPCS, INC. 358   2010-07-15   
331-642 3 Elmhurst IL   5562 METROPCS, INC. 358   2010-07-15   
331-642 4 Elmhurst IL   5562 METROPCS, INC. 358   2010-07-15   
331-642 5 Elmhurst IL   5562 METROPCS, INC. 358   2010-07-15   
331-642 6 Elmhurst IL   460K FIRST COMMUNICATIONS, LLC 358   2010-04-09   
331-642 7 Elmhurst IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-08-14   
331-642 8 Elmhurst IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-11-27   
331-642 9 Elmhurst IL   5562 METROPCS, INC. 358   2011-08-29   
331-643 A Aurora IL ELGNILOTGT5  5562 METROPCS, INC. 358      
331-643 0 Aurora IL   5562 METROPCS, INC. 358   2007-11-02   
331-643 1 Aurora IL   5562 METROPCS, INC. 358   2007-11-02   
331-643 2 Aurora IL   5562 METROPCS, INC. 358   2007-11-02   
331-643 3 Aurora IL   5562 METROPCS, INC. 358   2007-11-02   
331-643 4 Aurora IL   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2008-11-05   
331-643 5 Aurora IL   6529 T-MOBILE USA, INC. 358   2009-02-19   
331-643 6 Aurora IL   6529 T-MOBILE USA, INC. 358   2009-10-22   
331-643 7 Aurora IL   5562 METROPCS, INC. 358   2010-05-28   
331-643 8 Aurora IL   6529 T-MOBILE USA, INC. 358   2010-05-28   
331-643 9 Aurora IL   6529 T-MOBILE USA, INC. 358   2007-11-02   
331-645 A Elmhurst IL ELGNILOTGT5  5562 METROPCS, INC. 358      
331-645 0 Elmhurst IL   5562 METROPCS, INC. 358   2008-06-25   
331-645 1 Elmhurst IL   6529 T-MOBILE USA, INC. 358   2008-06-25   
331-645 2 Elmhurst IL   5562 METROPCS, INC. 358   2008-06-25   
331-645 3 Elmhurst IL   5562 METROPCS, INC. 358   2008-06-25   
331-645 4 Elmhurst IL   5562 METROPCS, INC. 358   2007-11-15   
331-645 5 Elmhurst IL   5562 METROPCS, INC. 358   2007-11-15   
331-645 6 Elmhurst IL   5562 METROPCS, INC. 358   2007-11-15   
331-645 7 Elmhurst IL   5562 METROPCS, INC. 358   2007-11-15   
331-645 8 Elmhurst IL   5562 METROPCS, INC. 358   2007-11-15   
331-645 9 Elmhurst IL   6529 T-MOBILE USA, INC. 358   2007-11-15   
331-666 A Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-666 0 Aurora IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2019-10-23   
331-666 1 Aurora IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2019-10-23   
331-666 2 Aurora IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2020-11-02   
331-666 3 Aurora IL   6529 T-MOBILE USA, INC. 358   2021-07-15   
331-666 4 Aurora IL   6529 T-MOBILE USA, INC. 358   2021-07-15   
331-666 5 Aurora IL   224C ONVOY, LLC 358   2019-06-07   
331-666 6 Aurora IL   224C ONVOY, LLC 358   2017-11-26   
331-666 7 Aurora IL   224C ONVOY, LLC 358   2019-06-07   
331-666 8 Aurora IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2019-10-23   

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Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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