Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 531 [Rate centres in NPA 531] [Dial plan for NPA 531]

NXX: 571

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-571 A Wakefield NE OMAHNENWXPX  549E ONVOY, LLC - NE 644      
531-571 0 Wakefield NE   549E ONVOY, LLC - NE 644   2016-05-21   
531-571 1 Wakefield NE   549E ONVOY, LLC - NE 644   2016-05-21   
531-571 3 Wakefield NE   549E ONVOY, LLC - NE 644   2019-09-16   
531-571 4 Wakefield NE   549E ONVOY, LLC - NE 644   2021-03-13   
531-571 5 Wakefield NE   549E ONVOY, LLC - NE 644   2019-09-16   
531-571 6 Wakefield NE   549E ONVOY, LLC - NE 644   2021-03-13   
531-571 7 Wakefield NE   508J CENTURYLINK COMMUNICATIONS, LLC 644   2016-06-23   
531-571 8 Wakefield NE   073H TELNYX LLC 644   2018-09-11   
531-571 9 Wakefield NE   478H AIRUS, INC. - NE 644   2019-05-20   

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

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