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: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-204 A Norfolk NE NRFLNENW5MD  960H MIDSTATES DATA TRANSPORT, LLC - NE 644      
531-204 0 Norfolk NE   732J NUSO, LLC 644   2016-12-24   
531-204 1 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2023-10-01   
531-204 2 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2019-09-16   
531-204 3 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2019-09-16   
531-204 4 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2024-08-19   
531-204 5 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2020-06-15   
531-204 6 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2021-04-12   
531-204 7 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2021-04-12   
531-204 8 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2021-04-12   
531-204 9 Norfolk NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2023-10-21   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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