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: 630 [Rate centres in NPA 630] [Dial plan for NPA 630]

NXX: 590

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
630-590 A Hinsdale IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
630-590 0 Hinsdale IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-11-10   
630-590 1 Hinsdale IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2017-01-14   
630-590 2 Hinsdale IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2008-04-28   
630-590 3 Hinsdale IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-09-04   
630-590 4 Hinsdale IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2015-07-03   
630-590 5 Hinsdale IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2005-08-01   
630-590 6 Hinsdale IL CHCGILWUX6X  460K FIRST COMMUNICATIONS, LLC 358   2006-10-08   
630-590 7 Hinsdale IL CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358   2017-03-17   
630-590 8 Hinsdale IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-09-04   
630-590 9 Hinsdale IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-12-08   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.