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: 227

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-227 A Mammoth WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650      
307-227 0 Mammoth WY CHYNWYRFDS0  581H AIRUS, INC. - WY 650   2018-03-02   
307-227 1 Mammoth WY BLNGMT933MD  073H TELNYX LLC 650   2019-03-01   
307-227 2 Mammoth WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650   2019-09-07   
307-227 3 Mammoth WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650   2020-09-05   
307-227 4 Mammoth WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650   2020-09-05   
307-227 5 Mammoth WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650   2021-03-19   
307-227 6 Mammoth WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650   2020-06-04   
307-227 7 Mammoth WY   145J TERRA NOVA TELECOM INC. 650   2023-08-31   
307-227 8 Mammoth WY CHYNWYRFDS0  581H AIRUS, INC. - WY 650   2019-11-01   
307-227 9 Mammoth WY CHYNWYRFDS0  581H AIRUS, INC. - WY 650   2020-01-05   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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