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: SPFDILSDX5X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
217-203 7 Buffalo IL 516C AT&T CORP. 374   2011-02-04   
217-210 2 Springfield IL 516C AT&T CORP. 374   2014-06-20   
217-487 5 Cantrall IL 516C AT&T CORP. 374   2011-09-29   
217-501 8 Petersburg IL 516C AT&T CORP. 374   2012-12-07   
217-572 A Springfield IL 516C AT&T CORP. 374      
217-572 1 Springfield IL 516C AT&T CORP. 374   2005-06-02   
217-576 A Rochester IL 516C AT&T CORP. 374      
217-576 7 Rochester IL 516C AT&T CORP. 374   2008-12-21   
217-629 2 Riverton IL 516C AT&T CORP. 374   2011-09-29   
217-706 5 Decatur IL 516C AT&T CORP. 374   2006-01-25   
217-952 7 Athens IL 516C AT&T CORP. 374   2010-01-17   
447-267 2 Oakford IL 516C AT&T CORP. 374   2024-09-12   
447-427 8 Tallula IL 516C AT&T CORP. 374   2023-10-02   
447-786 2 Harristown IL 516C AT&T CORP. 374   2023-10-02   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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