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: 212

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-212 A Rock Springs WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-212 0 Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2009-12-15   
307-212 1 Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2010-03-08   
307-212 2 Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2011-02-05   
307-212 3 Rock Springs WY CHYNWYMAZMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 654   2010-01-28   
307-212 4 Rock Springs WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-212 5 Rock Springs WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2005-09-05   
307-212 6 Rock Springs WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2006-10-06   
307-212 7 Rock Springs WY RCSPWYMADS1  9636 QWEST CORPORATION 654   2010-06-18   
307-212 8 Rock Springs WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654   2010-06-18   
307-212 9 Rock Springs WY CHYNWYMAX4X  370E YMAX COMMUNICATIONS CORP. - WY 654   2009-11-25   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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