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: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 452

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-452 A Casper WY   450F ONVOY, LLC - WY 654   2024-07-21   
307-452 0 Casper WY   450F ONVOY, LLC - WY 654      
307-452 1 Casper WY   450F ONVOY, LLC - WY 654      
307-452 2 Casper WY   450F ONVOY, LLC - WY 654      
307-452 5 Casper WY   9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-452 8 Casper WY   732J NUSO, LLC 654      
307-452 9 Casper WY   732J NUSO, LLC 654      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.