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: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 506

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-506 A Union IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-506 0 Union IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
815-506 1 Union IL ALTSIL011MD  792K CHARTER IP ENABLED SERVICES, LLC 358   2009-08-07   
815-506 2 Union IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2010-12-31   
815-506 3 Union IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2009-11-12   
815-506 4 Union IL CHCGILWBXWZ  829J PAETEC ITEL, LLC 358   2005-01-27   
815-506 5 Union IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-11-25   
815-506 6 Union IL CHCGILCLXOX  516C AT&T CORP. 358   2011-10-28   
815-506 7 Union IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2004-02-07   
815-506 8 Union IL CHCGILDTKMD  5447 ACCESS ONE, INC. - IL 358   2006-08-07   
815-506 9 Union IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.