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: DRGSIDMADS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
208-354 A Driggs ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-456 A Driggs ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-456 0 Driggs ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-456 2 Driggs ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-483 A Irwin ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-483 2 Irwin ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-483 3 Irwin ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-491 A Driggs ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-491 0 Driggs ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652   2019-09-15   
208-574 A Wayan ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
208-787 A Driggs ID 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
307-353 A Alta WY 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      
307-576 A Leigh Canyon WY 2214 COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 652      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.