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.

Charles City, IA

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
641-200 A DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632      
641-200 0 DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2018-08-31   
641-200 1 DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2018-08-31   
641-200 3 DESMIADTX5X  8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 632   2018-10-11   
641-200 4 DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2022-07-16   
641-200 5 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2023-11-01   
641-200 6 DESMIADTFMD  221F ONVOY, LLC - IA 632   2019-09-20   
641-200 8 DESMIAITX8X  145J TERRA NOVA TELECOM INC. 632   2024-02-13   
641-200 9   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2025-09-10   
641-220 A DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 0 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 1 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 2 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 3 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 4 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 5 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 6 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 7 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-220 8 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2015-12-30   
641-220 9 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2020-02-27   
641-228 A CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 0 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2004-10-02   
641-228 1 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 2 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 3 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 4 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 5 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 6 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 7 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 8 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-228 9 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 A CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 0 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 1 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 2 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 3 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 4 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 5 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 6 CHCYIATCRS2  9631 QWEST CORPORATION 632      
641-257 7 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2004-10-02   
641-257 8 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2003-12-27   
641-257 9 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2003-12-27   
641-281 A DESMIADTX3Y  495J STRATUS NETWORKS 632      
641-281 0 MSCYIATCFMD  624H ONVOY SPECTRUM, LLC 632   2024-01-20   
641-281 1 DESMIADTX3Y  495J STRATUS NETWORKS 632   2021-02-07   
641-281 2 MSCYIATCFMD  624H ONVOY SPECTRUM, LLC 632   2024-01-20   
641-281 3 MSCYIATCFMD  624H ONVOY SPECTRUM, LLC 632   2024-01-20   
641-281 4   515J IP HORIZON LLC 632   2025-09-25   
641-281 8 MSCYIATCFMD  624H ONVOY SPECTRUM, LLC 632   2024-01-20   
641-281 9 MSCYIATCFMD  624H ONVOY SPECTRUM, LLC 632   2024-01-20   
641-330 A CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632      
641-426 A DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-426 0 DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632      
641-426 1 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2017-04-13   
641-426 2 DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2010-10-08   
641-426 3 DESMIADTFMD  221F ONVOY, LLC - IA 632   2012-12-14   
641-426 4 DESMIADTTMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 632   2017-08-15   
641-426 5 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2005-03-14   
641-426 6 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2005-03-14   
641-426 7 DESMIAITX6X  5562 METROPCS, INC. 632   2018-07-02   
641-426 8 DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2005-03-10   
641-426 9 DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2005-03-10   
641-461 A RUDDIA012MD  321J HD CARRIER LLC 632      
641-461 0 DESMIADTXMX  073H TELNYX LLC 632   2020-05-25   
641-461 1 DESMIADTFMD  221F ONVOY, LLC - IA 632   2020-11-19   
641-461 2 DESMIADTFMD  221F ONVOY, LLC - IA 632   2020-11-19   
641-461 7 DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2024-09-21   
641-461 8 DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2020-06-23   
641-461 9 RUDDIA012MD  321J HD CARRIER LLC 632   2019-10-20   
641-552 A MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632      
641-552 0 DESMIADTFMD  221F ONVOY, LLC - IA 632   2016-04-08   
641-552 1 DESMIADTFMD  221F ONVOY, LLC - IA 632   2016-04-08   
641-552 2 DESMIADTFMD  221F ONVOY, LLC - IA 632   2013-01-24   
641-552 3 DESMIADTFMD  221F ONVOY, LLC - IA 632   2013-01-24   
641-552 4 DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2014-02-28   
641-552 5 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2007-08-02   
641-552 6 DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2015-06-22   
641-552 7 DESMIADTFMD  221F ONVOY, LLC - IA 632   2008-02-25   
641-552 8 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2016-03-31   
641-552 9 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2016-03-31   
641-631 A MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632      
641-631 0 DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2018-05-26   
641-631 1 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2018-01-27   
641-631 2 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2018-01-27   
641-631 3 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2018-01-27   
641-631 4 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2018-01-27   
641-631 5 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2018-01-27   
641-631 6 DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2018-05-26   
641-631 7 DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2018-04-02   
641-631 8 DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2018-04-02   
641-631 9 BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-14   
641-715 A DESMIADTFMD  221F ONVOY, LLC - IA 632      
641-715 0 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2006-04-07   
641-715 1 DESMIADTX7X  751F MCC TELEPHONY OF IOWA, LLC - IA 632   2010-04-15   
641-715 2 DESMIADTFMD  221F ONVOY, LLC - IA 632   2012-12-14   
641-715 3 MSCYIATCX0X  3620 OMNITEL COMMUNICATIONS, INC. - IA 632   2006-12-16   
641-715 4 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2007-03-30   
641-715 5 DESMIADTFMD  221F ONVOY, LLC - IA 632   2012-12-14   
641-715 6 DESMIADTXJX  508J CENTURYLINK COMMUNICATIONS, LLC 632   2017-03-16   
641-715 7 DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2015-06-26   

1 2 >>

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.