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.

OCN: 6115 LEVEL 3 COMMUNICATIONS, LLC - IL

<< 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 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
312-278 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-278 4 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-281 6 Chicago Zone 01-Franklin IL CHCGILGMDS7  358      
312-281 7 Chicago Zone 01-Franklin IL CHCGILGMDS7  358      
312-283 0 Chicago Zone 01-Franklin IL CHCGILGMDS7  358      
312-283 3 Chicago Zone 01-Franklin IL CHCGILGMDS7  358      
312-283 4 Chicago Zone 01-Franklin IL CHCGILGMDS7  358      
312-283 5 Chicago Zone 01-Franklin IL CHCGILGMDS7  358      
312-283 7 Chicago Zone 01-Franklin IL CHCGILGMDS7  358      
312-285 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2006-12-09   
312-288 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2008-06-27   
312-300 A Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-300 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2018-10-25   
312-300 4 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2012-02-25   
312-300 5 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2012-02-25   
312-300 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2012-02-25   
312-300 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2012-02-25   
312-324 A Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-324 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2005-01-30   
312-324 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2005-01-30   
312-324 5 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2002-05-21   
312-324 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2002-05-21   
312-324 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2002-05-21   
312-361 0 Chicago Zone 01-Monroe IL CHCGILGMDS7  358   2006-12-09   
312-361 1 Chicago Zone 01-Monroe IL CHCGILGMDS7  358   2010-07-14   
312-361 3 Chicago Zone 01-Monroe IL CHCGILGMDS7  358   2010-07-14   
312-361 8 Chicago Zone 01-Monroe IL CHCGILGMDS7  358   2006-12-09   
312-366 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2016-04-16   
312-373 A Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-373 1 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-373 2 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-373 3 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-373 4 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-373 6 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-373 7 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-373 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-373 9 Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-376 8 Chicago Zone 01-Calumet IL CHCGILGMDS7  358   2004-09-02   
312-379 8 Chicago Zone 01-Illinois Dearborn IL CHCGILGMDS7  358   2006-12-09   
312-380 4 Chicago Zone 01-Canal IL CHCGILGMDS7  358   2006-07-15   
312-380 5 Chicago Zone 01-Canal IL CHCGILGMDS7  358   2006-12-09   
312-380 6 Chicago Zone 01-Canal IL CHCGILGMDS7  358   2006-12-09   
312-386 5 Chicago Zone 01-Wabash IL CHCGILGMDS7  358   2011-08-06   
312-386 7 Chicago Zone 01-Wabash IL CHCGILGMDS7  358   2007-09-26   
312-395 5 Chicago Zone 01-Franklin IL CHCGILGMDS7  358   2003-01-12   
312-395 6 Chicago Zone 01-Franklin IL CHCGILGMDS7  358   2003-01-12   
312-395 7 Chicago Zone 01-Franklin IL CHCGILGMDS7  358   2002-10-22   
312-395 8 Chicago Zone 01-Franklin IL CHCGILGMDS7  358   2003-01-12   
312-423 A Chicago Zone 01-Calumet IL CHCGILGMDS7  358      
312-423 1 Chicago Zone 01-Calumet IL CHCGILGMDS7  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 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.