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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
319-381 9 IWCYIA702MD  939H COMMIO, LLC 635   2024-04-07   
319-383 A CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-383 0 CDRRIADTNMD  985E BANDWIDTH.COM CLEC, LLC - IA 635   2011-06-22   
319-383 1 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2011-06-27   
319-383 2 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2011-08-20   
319-383 3 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2012-04-13   
319-383 4 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2012-04-25   
319-383 5 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2014-08-29   
319-383 6 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2014-10-01   
319-383 7 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2013-09-13   
319-383 8 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2011-09-09   
319-383 9 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2011-05-20   
319-384 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-400 A CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-400 0 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-400 1 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-400 2 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-400 3 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-400 4 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-400 5 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2004-09-25   
319-400 6 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2005-10-29   
319-400 7 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-400 8 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2006-09-11   
319-400 9 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2008-03-17   
319-402 A CDRRIADTXMX  318J COMCAST IP PHONE, LLC 635      
319-402 0 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-402 1 CDRRIADTXMX  318J COMCAST IP PHONE, LLC 635   2023-06-11   
319-402 2 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-402 3 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-402 4 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-402 5 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-402 6 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-402 7 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-402 8 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-402 9 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-08-11   
319-430 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-430 0   6266 UNITED STATES CELLULAR - IA 635      
319-430 1   6266 UNITED STATES CELLULAR - IA 635      
319-430 2   6266 UNITED STATES CELLULAR - IA 635      
319-430 3   6266 UNITED STATES CELLULAR - IA 635      
319-430 4   6266 UNITED STATES CELLULAR - IA 635      
319-430 5   6266 UNITED STATES CELLULAR - IA 635      
319-430 6   6266 UNITED STATES CELLULAR - IA 635      
319-430 7   6266 UNITED STATES CELLULAR - IA 635      
319-430 8   6266 UNITED STATES CELLULAR - IA 635      
319-430 9   6266 UNITED STATES CELLULAR - IA 635      
319-466 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-467 A IWCYIATCDS0  9631 QWEST CORPORATION 635      
319-471 A CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      
319-471 0 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2008-03-16   
319-471 1 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2006-08-31   
319-471 2 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2007-11-12   
319-471 3 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2007-04-14   
319-471 4 CDRRIADTDMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 635   2007-05-16   
319-471 5 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2007-11-29   
319-471 6 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2007-04-27   
319-471 7 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2007-04-27   
319-471 8 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2006-11-09   
319-471 9 IWCYIA702MD  939H COMMIO, LLC 635   2024-03-01   
319-485 A CDRRIADTYZZ  829J PAETEC ITEL, LLC 635      
319-485 0   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 1   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 2   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 3   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 4   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 5   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 6   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 7   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 8   829J PAETEC ITEL, LLC 635   2024-04-19   
319-485 9   829J PAETEC ITEL, LLC 635   2024-04-19   
319-492 A CDRRIADTKMD  221F ONVOY, LLC - IA 635   2024-08-09   
319-492 0 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2024-08-09   
319-492 1 CDRRIADTKMD  221F ONVOY, LLC - IA 635   2024-08-09   
319-492 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2026-01-23   
319-492 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2026-04-17   
319-492 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2025-08-29   
319-492 5   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2025-10-11   
319-492 6   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2025-12-02   
319-492 7 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2025-12-02   
319-492 8 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2024-08-10   
319-492 9   515J IP HORIZON LLC 635   2025-08-14   
319-499 A CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      
319-499 0 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2011-05-23   
319-499 1 CDRRIAIC2MD  593K MCC TELEPHONY LLC 635   2011-05-25   
319-499 2 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2012-03-18   
319-499 3 CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2012-11-01   
319-499 4 CDRRIADTDMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 635   2014-04-03   
319-499 5 CDRRIADTNMD  985E BANDWIDTH.COM CLEC, LLC - IA 635   2015-02-16   
319-499 6 CDRRIADTUMD  8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2012-05-01   
319-499 7 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2015-05-15   
319-499 8 CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2013-08-30   
319-499 9 CDRRIAAXQMD  444G AUREON COMMUNICATIONS, LLC 635   2012-08-16   
319-512 A CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-512 0 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-512 1 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-512 2 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2015-07-10   
319-512 3 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2016-09-11   
319-512 4 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2016-09-11   
319-512 5 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2015-09-14   
319-512 6 CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2015-09-14   

<< 1 2 3 4 >>

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.