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: KMMRWYMARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-828 A Kemmerer WY 9636 QWEST CORPORATION 654      
307-828 2 Kemmerer WY 9636 QWEST CORPORATION 654      
307-828 3 Kemmerer WY 9636 QWEST CORPORATION 654      
307-828 4 Kemmerer WY 9636 QWEST CORPORATION 654      
307-828 6 Kemmerer WY 9636 QWEST CORPORATION 654      
307-828 9 Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 A Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 0 Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 1 Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 2 Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 3 Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 4 Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 5 Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 6 Kemmerer WY 9636 QWEST CORPORATION 654      
307-877 9 Kemmerer WY 9636 QWEST CORPORATION 654      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.