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: 872 [Rate centres in NPA 872] [Dial plan for NPA 872]

NXX: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
872-257 A Chicago Zone 05-Austin IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
872-257 0 Chicago Zone 05-Austin IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
872-257 1 Chicago Zone 05-Austin IL CHCGILWUJMD  073H TELNYX LLC 358      
872-257 2 Chicago Zone 05-Austin IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
872-257 3 Chicago Zone 05-Austin IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
872-257 4 Chicago Zone 05-Austin IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
872-257 5 Chicago Zone 05-Austin IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
872-257 6 Chicago Zone 05-Austin IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
872-257 7 Chicago Zone 05-Austin IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
872-257 8 Chicago Zone 05-Austin IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
872-257 9 Chicago Zone 05-Austin IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.