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: CSPRWYMAXMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-797 9 Casper WY 6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-854 8 Riverton WY 6010 NEW CINGULAR WIRELESS PCS, LLC 654   2020-10-12   
307-899 A Cody WY 6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-900 7 Glendo WY 6010 NEW CINGULAR WIRELESS PCS, LLC 654   2020-10-09   
307-900 8 Glendo WY 6010 NEW CINGULAR WIRELESS PCS, LLC 654   2020-10-09   
307-939 3 Wright WY 6010 NEW CINGULAR WIRELESS PCS, LLC 654   2018-02-27   
307-939 4 Wright WY 6010 NEW CINGULAR WIRELESS PCS, LLC 654   2018-02-28   
970-780 9 South Laramie CO 6010 NEW CINGULAR WIRELESS PCS, LLC 654   2021-11-18   

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

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