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.

De Witt, IA

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
563-256 1   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-256 2   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-256 3   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-256 4   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-655 A DWTTIAXOPS0  1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-655 1   221F ONVOY, LLC - IA 634   2021-03-14   
563-655 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2020-09-30   
563-655 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 634   2018-06-01   
563-655 4   221F ONVOY, LLC - IA 634   2020-06-27   
563-655 5   5562 METROPCS, INC. 634   2018-08-03   
563-655 6   624H ONVOY SPECTRUM, LLC 634   2020-10-06   
563-655 7   221F ONVOY, LLC - IA 634   2020-10-06   
563-655 8   8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 634   2020-10-12   
563-655 9   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634   2015-09-01   
563-659 A DWTTIAXORP0  1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-659 0   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-659 1   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-659 2   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-659 3   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-659 4   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-659 5   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-659 6   198D GRAND MOUND COOPERATIVE TELEPHONE ASSOCIATION 634   2005-11-12   
563-659 7   6266 UNITED STATES CELLULAR - IA 634   2017-08-15   
563-659 8   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      
563-659 9   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 634      

<< 1 2

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.