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.


NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
307-325 A Hanna WY HANNWYXCRS1  654      
307-326 A Saratoga WY SRTGWYXCRS1  654      
307-327 A Encampment WY ENCMWYXCRS1  654      
307-348 A Hanna WY ELMTWYXCRS1  654      
307-356 A Shirley Basin WY SYBNWYXCRS1  654      
307-378 A Rock River WY RCRVWYXCRS1  654      
307-386 A Labarge WY LBRGWYXCRS1  654      
307-782 A Mountain View WY MNVWWYXCDS0  654      
307-786 A Urie WY URIEWYXCRS1  654      
307-787 A Lyman WY LYMNWYXCRS1  654      
307-874 A Manila WY MANLWYXCRS1  654      
435-642 A Christmas Meadows UT CHMWUTXCDS0  654      
435-784 A Manila UT MANLUTXCDS0  654      
435-885 A Dutch John UT DTJHUTXCDS0  654      
435-889 A Greendale UT GNDLUTXCDS0  654      
970-365 A Lodore CO LODRCOXCDS0  656      

Last updated: Fri, 28 Jun 2024 03:14:50 UTC

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