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: CHYNWYMADS0

Remotes:

Switch Switch name Switch type
WHLDWYMARS1  WHEATLAND  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-432 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-433 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-632 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-633 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-634 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-635 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-637 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-638 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-771 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-772 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-773 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-775 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-777 A Cheyenne WY 9636 QWEST CORPORATION 654      
307-778 A Cheyenne WY 9636 QWEST CORPORATION 654      
970-662 A South Cheyenne CO 9636 QWEST CORPORATION 654      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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