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.

Waterloo, IA

1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
319-215 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-215 0   6266 UNITED STATES CELLULAR - IA 635   2005-04-28   
319-215 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2008-05-10   
319-215 2   6266 UNITED STATES CELLULAR - IA 635   2005-04-28   
319-215 3   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2005-02-01   
319-215 4   6266 UNITED STATES CELLULAR - IA 635   2005-02-01   
319-215 5   6266 UNITED STATES CELLULAR - IA 635   2005-04-28   
319-215 6   6266 UNITED STATES CELLULAR - IA 635   2005-04-28   
319-215 7   6266 UNITED STATES CELLULAR - IA 635   2005-04-28   
319-215 8   6266 UNITED STATES CELLULAR - IA 635   2005-04-28   
319-215 9   6266 UNITED STATES CELLULAR - IA 635   2005-04-28   
319-226 A WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-229 A CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-229 0   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2015-10-28   
319-229 1   444G AUREON COMMUNICATIONS, LLC 635   2014-12-26   
319-229 2   985E BANDWIDTH.COM CLEC, LLC - IA 635   2015-03-07   
319-229 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2014-11-07   
319-229 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2014-11-07   
319-229 5   985E BANDWIDTH.COM CLEC, LLC - IA 635   2015-03-07   
319-229 6   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2015-05-10   
319-229 7   221F ONVOY, LLC - IA 635   2014-11-07   
319-229 8   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2016-06-08   
319-229 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2014-09-29   
319-230 A CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635      
319-231 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-232 A WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-233 A WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-234 A WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-235 A WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-236 A WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-239 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-240 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-252 A CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-252 0   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2017-04-30   
319-252 1   423H AIRUS, INC - IA 635   2018-02-16   
319-252 2   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2017-08-28   
319-252 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2016-08-15   
319-252 4   593K MCC TELEPHONY LLC 635   2016-11-24   
319-252 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2016-08-13   
319-252 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2016-08-13   
319-252 7   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2018-03-09   
319-252 8   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2018-04-16   
319-252 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2019-04-16   
319-269 A CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-272 A WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-274 A WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-274 0   9631 QWEST CORPORATION 635      
319-274 1   9631 QWEST CORPORATION 635      
319-274 2   9631 QWEST CORPORATION 635      
319-274 3   9631 QWEST CORPORATION 635      

1 2 3 4 5 6 7 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.