Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 364

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-364 A Green River WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654      
307-364 0 Green River WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654      
307-364 1 Green River WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-364 2 Green River WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-364 3 Green River WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-364 4 Green River WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-364 5 Green River WY EVTNWY161MD  3880 ALL WEST/WYOMING, INC. 654      
307-364 6 Green River WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-364 7 Green River WY CHYNWYMAXAX  508J CENTURYLINK COMMUNICATIONS, LLC 654      
307-364 8 Green River WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-364 9 Green River WY CHYNWYMAX9X  879G TELEPORT COMMUNICATIONS AMERICA WY-LLC 654      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.