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: CHYNWYMAQMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-624 2 Douglas WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2016-07-21   
307-655 1 Sheridan WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2011-01-16   
307-655 6 Sheridan WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2010-06-25   
307-735 3 Glendo WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2011-12-24   
307-776 9 Casper WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2019-10-24   
307-800 1 Kemmerer WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2014-06-20   
307-828 1 Kemmerer WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2008-11-29   
307-840 9 Riverton WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2008-11-29   
307-855 0 Riverton WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2019-06-07   
307-855 1 Riverton WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2019-07-18   
307-886 4 Afton WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2014-11-28   
307-922 0 Rock Springs WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2011-01-26   
307-939 2 Wright WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2015-03-12   
307-999 4 Moran WY 081F BANDWIDTH.COM CLEC, LLC - WY 654   2022-02-19   
406-840 4 Silvertip MT 994E BANDWIDTH.COM CLEC, LLC - MT 654   2012-04-15   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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