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.

Switch: RCSPWYMADS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-209 6 Rock Springs WY 9636 QWEST CORPORATION 654   2015-10-27   
307-212 7 Rock Springs WY 9636 QWEST CORPORATION 654   2010-06-18   
307-352 A Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 0 Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 1 Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 2 Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 3 Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 4 Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 5 Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 6 Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 7 Rock Springs WY 9636 QWEST CORPORATION 654      
307-352 8 Rock Springs WY 9636 QWEST CORPORATION 654      
307-362 A Rock Springs WY 9636 QWEST CORPORATION 654      
307-382 A Rock Springs WY 9636 QWEST CORPORATION 654      
307-922 5 Rock Springs WY 9636 QWEST CORPORATION 654   2007-04-21   
307-922 7 Rock Springs WY 9636 QWEST CORPORATION 654   2008-09-28   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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