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.

Iowa City, IA

1 2 3 4 5 6 7 8 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
319-248 A CDRRIADTYZZ  829J PAETEC ITEL, LLC 635      
319-259 A IWCYIA701MD  073H TELNYX LLC 635      
319-259 0 MNTIIAAKDS0  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 635   2018-05-11   
319-259 1 IWCYIA701MD  073H TELNYX LLC 635   2017-08-13   
319-259 2 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2018-04-09   
319-259 3 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2018-04-09   
319-259 4 CDRRIAAX7MD  5562 METROPCS, INC. 635   2018-06-30   
319-259 5 CDRRIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2018-04-14   
319-259 6 CDRRIADTNMD  985E BANDWIDTH.COM CLEC, LLC - IA 635   2019-05-02   
319-259 7 MARNIACODS0  695G IMON COMMUNICATIONS, LLC - IA 635   2020-10-22   
319-259 8 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-01-02   
319-259 9 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2017-10-27   
319-319 A CDRRIADTKMD  221F ONVOY, LLC - IA 635      
319-319 0 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 1 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 2 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 3 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 4 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 5 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 6 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 7 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 8 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-319 9 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2022-11-27   
319-321 A CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635      
319-325 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 0 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 1 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 2 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 3 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 4 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 5 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 6 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 7 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 8 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-325 9 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 0 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 1 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 2 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 3 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 4 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 5 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 6 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 7 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 8 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-330 9 CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-331 A CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635      
319-333 A CDRRIAIC2MD  593K MCC TELEPHONY LLC 635      
319-333 0 CDRRIADTNMD  985E BANDWIDTH.COM CLEC, LLC - IA 635   2010-09-10   
319-333 1 CDRRIAIC2MD  593K MCC TELEPHONY LLC 635   2010-05-15   

1 2 3 4 5 6 7 8 >>

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.