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: 448

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-448 A Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654      
307-448 0 Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2011-07-08   
307-448 1 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-12-13   
307-448 2 Rock Springs WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2012-03-24   
307-448 3 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-12-13   
307-448 4 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-12-13   
307-448 5 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-12-13   
307-448 6 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2012-12-13   
307-448 7 Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2013-10-20   
307-448 8 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2021-03-02   
307-448 9 Rock Springs WY CHYNWYMAX9X  879G TELEPORT COMMUNICATIONS AMERICA WY-LLC 654   2014-05-22   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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