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: 990

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-990 A Lander WY CHYNWYJL4MD  939H COMMIO, LLC 654      
307-990 0 Lander WY   939H COMMIO, LLC 654   2023-06-04   
307-990 1 Lander WY   450F ONVOY, LLC - WY 654   2023-07-23   
307-990 2 Lander WY   939H COMMIO, LLC 654   2023-12-23   
307-990 3 Lander WY   939H COMMIO, LLC 654   2023-12-23   
307-990 4 Lander WY   450F ONVOY, LLC - WY 654   2024-03-07   
307-990 5 Lander WY   450F ONVOY, LLC - WY 654   2024-07-08   
307-990 8 Lander WY   450F ONVOY, LLC - WY 654   2023-10-28   
307-990 9 Lander WY   450F ONVOY, LLC - WY 654   2023-10-28   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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