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.

Torrington, WY

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
307-575 9 GDISNENWX5X  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 646      
307-715 A CHYNWYVACM1  013B UNION TELEPHONE COMPANY 646      

<< 1 2

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.