Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-420 A Lingle WY SCTSNEXUMMD  450F ONVOY, LLC - WY 646      
307-420 0 Lingle WY SCTSNEXUMMD  450F ONVOY, LLC - WY 646   2024-01-08   
307-420 1 Lingle WY SCTSNEXUMMD  450F ONVOY, LLC - WY 646   2023-07-23   
307-420 2 Lingle WY   6529 T-MOBILE USA, INC. 646   2025-04-03   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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