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: 370

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-370 A Fremont NE OMAHNE16X9X  710A ALLO COMMUNICATIONS, LLC - NE 644   2024-11-03   
531-370 5 Fremont NE   710A ALLO COMMUNICATIONS, LLC - NE 644   2025-01-16   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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