Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 402 [Rate centres in NPA 402] [Dial plan for NPA 402]

NXX: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
402-857 A Niobrara NE NBRRNEXHRS1  1577 GREAT PLAINS COMMUNICATIONS, INC. 644      
402-857 0 Niobrara NE OMAHNENWXNY  6874 N.E. COLORADO CELLULAR, INC. 644   2010-04-22   
402-857 2 Niobrara NE NBRRNEXHRS1  1577 GREAT PLAINS COMMUNICATIONS, INC. 644      
402-857 3 Niobrara NE NBRRNEXHRS1  1577 GREAT PLAINS COMMUNICATIONS, INC. 644      
402-857 7 Niobrara NE   145J TERRA NOVA TELECOM INC. 644   2025-07-14   

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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