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: 400G CLEAR RATE COMMUNICATIONS, INC. - IL

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
224-313 7 Wheeling IL   358   2016-07-25   
312-508 7 Chicago Zone 01-Calumet IL   358   2012-06-10   
331-209 3 Elmhurst IL   358   2012-06-10   
331-212 7 Aurora IL   358   2012-07-01   
630-467 9 Bensenville IL   358   2012-06-10   
630-482 1 Geneva IL   358   2012-06-10   
630-520 7 West Chicago IL   358   2012-06-10   
630-678 7 Lombard IL   358   2012-06-10   
708-258 2 Peotone IL   358   2012-06-10   
708-300 7 Chicago Heights IL   358   2012-07-01   
708-493 6 Bellwood IL   358   2012-06-10   
708-666 A Oak Park IL LGRCILLGXKX  358      
708-666 7 Oak Park IL LGRCILLGXKX  358   2011-11-29   
708-928 7 Tinley Park IL   358   2012-06-10   
773-231 1 Chicago Zone 07-Stewart IL   358   2012-07-03   
773-492 7 Chicago Zone 08-Portsmouth IL   358   2012-06-10   
773-657 7 Chicago Zone 03-Kildare IL   358   2012-06-10   
773-694 7 Chicago Zone 11-O'Hare IL   358   2012-06-10   
773-836 6 Chicago Zone 05-Merrimac IL   358   2012-06-10   
815-553 6 Joliet IL   358   2012-07-02   
872-203 8 Chicago Zone 02-Edgewater IL   358   2012-06-10   
872-205 7 Chicago Zone 06-Kedzie IL   358   2012-07-01   
872-206 7 Chicago Zone 04-Humboldt IL   358   2012-07-01   
872-395 7 Chicago Zone 10-Beverly IL   358   2012-06-10   
872-666 7 Chicago Zone 09-South Chicago IL   358   2012-06-10   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.