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
319-333 2 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2010-09-15   
319-333 3 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2011-05-26   
319-333 4 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2011-06-29   
319-333 5 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2011-04-15   
319-333 6 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2011-04-15   
319-333 7 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2011-01-20   
319-333 8 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2011-01-30   
319-333 9 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2010-09-19   
319-335 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-337 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-338 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-339 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-341 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-351 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-353 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-354 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-356 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-358 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-359 A CDRRIAIC2MD  593K MCC TELEPHONY LLC 635      
319-359 0 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2012-10-20   
319-359 1 CDRRIAIC2MD  593K MCC TELEPHONY LLC 635   2012-09-10   
319-359 2 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2012-12-13   
319-359 3 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2012-12-13   
319-359 4 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2012-12-13   
319-359 5 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2012-12-13   
319-359 6 CDRRIADTNMD  985E BANDWIDTH.COM CLEC, LLC - IA 635   2013-10-09   
319-359 7 CDRRIADTNMD  985E BANDWIDTH.COM CLEC, LLC - IA 635   2014-08-30   
319-359 8 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2014-05-12   
319-359 9 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2013-08-12   
319-379 A IWCYIA708MD  321J HD CARRIER LLC 635      
319-379 0 IWCYIA70DS0  423H AIRUS, INC - IA 635   2021-10-21   
319-379 1 CDRRIAAX7MD  5562 METROPCS, INC. 635   2021-10-14   
319-379 2 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2021-02-04   
319-379 3 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2021-02-04   
319-379 4 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2021-02-04   
319-379 5 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2021-03-14   
319-379 6 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2021-03-14   
319-379 7 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2021-03-14   
319-379 8 IWCYIA708MD  321J HD CARRIER LLC 635   2020-11-20   
319-379 9 IWCYIA708MD  321J HD CARRIER LLC 635   2020-11-20   
319-381 A CDRRIADTXCX  495J STRATUS NETWORKS 635      
319-381 0 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2023-07-05   
319-381 1 CDRRIADTXCX  495J STRATUS NETWORKS 635   2021-02-19   
319-381 2 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2021-12-06   
319-381 3 CDRRIADTHMD  624H ONVOY SPECTRUM, LLC 635   2021-07-22   
319-381 4 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-02-09   
319-381 5 IWCYIA7000Z  490J BOOST SUBSCRIBERCO L.L.C. 635   2023-06-11   
319-381 6 IWCYIA702MD  939H COMMIO, LLC 635   2024-04-07   
319-381 7 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2022-08-10   
319-381 8 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   

<< 1 2 3 4 5 6 7 8 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.