Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 563 [Rate centres in NPA 563] [Dial plan for NPA 563]

NXX: 291

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
563-291 A Dubuque IA DVNPIADTGMD  221F ONVOY, LLC - IA 634      
563-291 0 Dubuque IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634   2021-03-25   
563-291 1 Dubuque IA   221F ONVOY, LLC - IA 634   2021-03-14   
563-291 2 Dubuque IA   221F ONVOY, LLC - IA 634   2021-03-14   
563-291 3 Dubuque IA   221F ONVOY, LLC - IA 634   2021-03-11   
563-291 4 Dubuque IA   221F ONVOY, LLC - IA 634   2021-03-11   
563-291 5 Dubuque IA   221F ONVOY, LLC - IA 634   2021-03-11   
563-291 6 Dubuque IA   221F ONVOY, LLC - IA 634   2021-03-11   
563-291 7 Dubuque IA   221F ONVOY, LLC - IA 634   2021-03-14   
563-291 8 Dubuque IA   221F ONVOY, LLC - IA 634   2021-03-14   
563-291 9 Dubuque IA   6266 UNITED STATES CELLULAR - IA 634   2021-03-12   

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

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