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: IDFLIDMADS1

Remotes:

Switch Switch name Switch type
RBRTIDMARS2  ROBERTS  RSC 
RGBYIDMARS4  RIGBY  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
208-227 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-227 0 Idaho Falls ID 9636 QWEST CORPORATION 652      
208-227 1 Idaho Falls ID 9636 QWEST CORPORATION 652      
208-227 2 Idaho Falls ID 9636 QWEST CORPORATION 652      
208-227 9 Idaho Falls ID 9636 QWEST CORPORATION 652      
208-522 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-523 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-524 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-525 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-526 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-528 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-529 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-533 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-534 2 Idaho Falls ID 9636 QWEST CORPORATION 652   2005-05-23   
208-534 3 Idaho Falls ID 9636 QWEST CORPORATION 652   2005-05-23   
208-534 4 Idaho Falls ID 9636 QWEST CORPORATION 652   2005-05-23   
208-535 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-542 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-552 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-557 A Idaho Falls ID 9636 QWEST CORPORATION 652      
208-557 0 Idaho Falls ID 9636 QWEST CORPORATION 652      
208-557 2 Idaho Falls ID 9636 QWEST CORPORATION 652      
208-557 5 Idaho Falls ID 9636 QWEST CORPORATION 652      
208-557 6 Idaho Falls ID 9636 QWEST CORPORATION 652      
208-557 7 Idaho Falls ID 9636 QWEST CORPORATION 652      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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