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: 773 [Rate centres in NPA 773] [Dial plan for NPA 773]

NXX: 417

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-417 A Chicago Zone 05-Austin IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
773-417 0 Chicago Zone 05-Austin IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-07-02   
773-417 1 Chicago Zone 05-Austin IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-07-02   
773-417 2 Chicago Zone 05-Austin IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
773-417 3 Chicago Zone 05-Austin IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2006-08-24   
773-417 4 Chicago Zone 05-Austin IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2006-09-09   
773-417 5 Chicago Zone 05-Austin IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-07-02   
773-417 6 Chicago Zone 05-Austin IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-13   
773-417 7 Chicago Zone 05-Austin IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2008-11-26   
773-417 8 Chicago Zone 05-Austin IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2008-11-26   
773-417 9 Chicago Zone 05-Austin IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-13   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.