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.
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Gravity, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-377 A GRVTIAXORP0  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 644      
712-377 0   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 644   2024-10-25   
712-377 3   221F ONVOY, LLC - IA 644   2019-11-28   
712-377 4   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 644   2012-09-17   
712-377 5   221F ONVOY, LLC - IA 644   2021-04-02   
712-377 6   221F ONVOY, LLC - IA 644   2021-04-02   
712-377 7   965H FRACTEL, LLC 644   2020-01-16   
712-537 A GRVTIAXORS5  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 644      
712-537 0   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 644      
712-537 1   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 644      
712-537 2   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 644      
712-537 3   444G AUREON COMMUNICATIONS, LLC 644   2022-12-15   
712-537 7   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 644   2005-07-12   
712-537 8   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 644      
712-537 9   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 644      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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