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: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 576

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-576 A Rochester IL SPFDILSDX5X  516C AT&T CORP. 374      
217-576 0 Rochester IL SPFDILESXYX  495J STRATUS NETWORKS 374   2020-11-13   
217-576 1 Rochester IL SPFDILES8MD  939H COMMIO, LLC 374   2022-08-15   
217-576 2 Rochester IL SPFDILESDS3  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 374   2020-10-26   
217-576 3 Rochester IL SPFDILES7MD  224C ONVOY, LLC 374   2013-12-09   
217-576 4 Rochester IL SPFDILES7MD  224C ONVOY, LLC 374   2023-04-20   
217-576 5 Rochester IL SPFDILES7MD  224C ONVOY, LLC 374   2021-02-26   
217-576 6 Rochester IL SPFDILES7MD  224C ONVOY, LLC 374   2021-02-26   
217-576 7 Rochester IL SPFDILSDX5X  516C AT&T CORP. 374   2008-12-21   
217-576 8 Rochester IL SPFDILES7MD  224C ONVOY, LLC 374   2023-09-23   
217-576 9 Rochester IL SPFDILES7MD  224C ONVOY, LLC 374   2023-07-24   

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.