Local Calling Guide

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NPA: 641 [Rate centres in NPA 641] [Dial plan for NPA 641]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
641-317 9 Kanawha IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2021-05-31   
641-318 A Knoxville IA DESMIAITX6X  6529 T-MOBILE USA, INC. 632      
641-321 A Mount Ayr IA DESMIADTXJX  508J CENTURYLINK COMMUNICATIONS, LLC 632      
641-321 0 Mount Ayr IA DESMIADTXZX  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 632   2020-10-20   
641-321 1 Mount Ayr IA BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632   2018-05-15   
641-321 2 Mount Ayr IA DESMIADTTMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 632   2018-04-02   
641-321 3 Mount Ayr IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2019-11-29   
641-321 4 Mount Ayr IA DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2022-02-18   
641-321 5 Mount Ayr IA KNVLIAXCPMD  624H ONVOY SPECTRUM, LLC 632   2024-03-09   
641-321 6 Mount Ayr IA KNVLIAXCSMD  221F ONVOY, LLC - IA 632   2020-08-10   
641-321 7 Mount Ayr IA DESMIADTXJX  508J CENTURYLINK COMMUNICATIONS, LLC 632   2018-02-02   
641-321 9 Mount Ayr IA CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2021-10-09   
641-322 A Corning IA CRNGIAXODS0  1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 632      
641-322 0 Corning IA CRNGIAXODS0  1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 632      
641-322 1 Corning IA DESMIAITGT5  444G AUREON COMMUNICATIONS, LLC 632   2019-09-30   
641-322 2 Corning IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2021-04-16   
641-322 3 Corning IA CRNGIAXODS0  1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 632      
641-322 4 Corning IA CRNGIAXODS0  1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 632      
641-322 5 Corning IA CRNGIAXODS0  1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 632      
641-322 6 Corning IA CRNGIAXODS0  1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 632      
641-322 7 Corning IA DESMIADTX1X  624H ONVOY SPECTRUM, LLC 632   2021-07-17   
641-322 8 Corning IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2021-04-16   
641-322 9 Corning IA DESMIADTXKX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2021-03-10   
641-323 A Northwood IA NWODIA051MD  6103 WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA 632      
641-323 0 Northwood IA DESMIADTX7X  751F MCC TELEPHONY OF IOWA, LLC - IA 632   2010-04-15   
641-323 1 Northwood IA DESMIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 632   2010-04-01   
641-323 2 Northwood IA DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2012-02-09   
641-323 3 Northwood IA DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2015-05-25   
641-323 4 Northwood IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2016-04-06   
641-323 5 Northwood IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2016-04-06   
641-323 6 Northwood IA DESMIAEA0MD  985E BANDWIDTH.COM CLEC, LLC - IA 632   2016-07-16   
641-323 7 Northwood IA NWODIA051MD  6103 WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA 632   2005-09-29   
641-323 8 Northwood IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2017-06-22   
641-323 9 Northwood IA DESMIADTXMX  073H TELNYX LLC 632   2020-05-29   
641-324 A Northwood IA NWODIACORS3  9631 QWEST CORPORATION 632      
641-324 0 Northwood IA NWODIACORS3  9631 QWEST CORPORATION 632      
641-324 1 Northwood IA NWODIACORS3  9631 QWEST CORPORATION 632      
641-324 2 Northwood IA NWODIACORS3  9631 QWEST CORPORATION 632      
641-324 3 Northwood IA NWODIACORS3  9631 QWEST CORPORATION 632      
641-324 4 Northwood IA NWODIACORS3  9631 QWEST CORPORATION 632      
641-324 5 Northwood IA   515J IP HORIZON LLC 632   2025-09-26   
641-324 6 Northwood IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2018-04-14   
641-324 7 Northwood IA DESMIADTFMD  221F ONVOY, LLC - IA 632   2008-08-29   
641-324 8 Northwood IA DESMIAITX6X  6529 T-MOBILE USA, INC. 632   2009-03-09   
641-324 9 Northwood IA NWODIACORS3  9631 QWEST CORPORATION 632      
641-325 A Grinnell IA CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632      
641-325 1 Grinnell IA CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2007-07-01   
641-325 2 Grinnell IA CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2015-01-10   
641-325 3 Grinnell IA CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632   2018-01-20   
641-325 4 Grinnell IA GRNLIAXCPMD  221F ONVOY, LLC - IA 632   2021-05-06   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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