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: CHCGILGMDS7

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
773-823 0 Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-07-20   
773-828 A Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-828 4 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-828 5 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-08-30   
773-828 8 Chicago Zone 02-Edgewater IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2003-06-22   
773-829 A Chicago Zone 04-Lakeview IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-829 4 Chicago Zone 04-Lakeview IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-831 A Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-831 4 Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-832 7 Chicago Zone 04-Lakeview IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2017-09-14   
773-840 0 Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-04-03   
773-840 2 Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-08-15   
773-840 7 Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-01-05   
773-840 8 Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-01-05   
773-877 3 Chicago Zone 03-Kildare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-886 1 Chicago Zone 07-Stewart IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-08-26   
773-896 1 Chicago Zone 07-Oakland IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-03-02   
773-902 A Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-902 1 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-902 3 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-902 4 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-904 A Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-904 0 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-07-18   
773-904 2 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2008-07-18   
773-904 9 Chicago Zone 04-Humboldt IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-01-22   
773-905 A Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-905 1 Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-905 5 Chicago Zone 10-Beverly IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-906 A Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-906 2 Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-906 5 Chicago Zone 11-O'Hare IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-912 A Chicago Zone 08-Portsmouth IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-912 5 Chicago Zone 08-Portsmouth IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-912 8 Chicago Zone 08-Portsmouth IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-913 A Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-913 0 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-913 1 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-913 2 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-913 3 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-913 6 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-913 8 Chicago Zone 09-South Chicago IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-915 A Chicago Zone 07-Stewart IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-915 4 Chicago Zone 07-Stewart IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-03-02   
773-915 8 Chicago Zone 07-Stewart IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-915 9 Chicago Zone 07-Stewart IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-920 A Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-920 3 Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-920 4 Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-920 7 Chicago Zone 06-Kedzie IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-922 A Chicago Zone 05-Austin IL 6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 >>

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.