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: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-357 A Ainsworth NE OMAHNE169MD  939H COMMIO, LLC 644   2024-03-18   
531-357 0 Ainsworth NE OMAHNE169MD  939H COMMIO, LLC 644   2024-03-18   
531-357 1 Ainsworth NE   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2025-05-23   
531-357 5 Ainsworth NE   5562 METROPCS, INC. 644   2025-05-06   
531-357 7 Ainsworth NE   6701 AERIAL COMMUNICATIONS, INC. 644   2025-05-01   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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