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: CHCGIL24MMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
224-340 1 Des Plaines IL 515J IP HORIZON LLC 358      
224-341 1 Skokie IL 515J IP HORIZON LLC 358      
224-350 8 Evanston IL 515J IP HORIZON LLC 358      
224-367 1 Dundee IL 515J IP HORIZON LLC 358      
224-369 1 Waukegan IL 515J IP HORIZON LLC 358      
224-371 9 Grayslake IL 515J IP HORIZON LLC 358      
224-375 1 Algonquin IL 515J IP HORIZON LLC 358      
224-378 1 Libertyville IL 515J IP HORIZON LLC 358      
224-379 1 Park Ridge IL 515J IP HORIZON LLC 358      
224-452 0 Palatine IL 515J IP HORIZON LLC 358      
224-499 6 Arlington Heights IL 515J IP HORIZON LLC 358      
224-550 1 Elk Grove IL 515J IP HORIZON LLC 358      
224-799 1 Northbrook IL 515J IP HORIZON LLC 358      
224-840 8 Elgin IL 515J IP HORIZON LLC 358      
224-933 7 Round Lake IL 515J IP HORIZON LLC 358      
331-261 1 Lemont IL 515J IP HORIZON LLC 358      
331-266 1 Geneva IL 515J IP HORIZON LLC 358      
331-269 0 Aurora IL 515J IP HORIZON LLC 358      
331-345 0 Naperville IL 515J IP HORIZON LLC 358      
331-356 0 Bartlett IL 515J IP HORIZON LLC 358      
331-399 0 Downers Grove IL 515J IP HORIZON LLC 358      
331-899 0 Lombard IL 515J IP HORIZON LLC 358      
331-900 2 Elmhurst IL 515J IP HORIZON LLC 358      
630-237 1 Roselle IL 515J IP HORIZON LLC 358      
630-344 8 Wheaton IL 515J IP HORIZON LLC 358      
630-891 8 Hinsdale IL 515J IP HORIZON LLC 358      
708-223 9 Bellwood IL 515J IP HORIZON LLC 358      
872-271 4 Chicago Zone 03-Kildare IL 515J IP HORIZON LLC 358      
872-274 A Chicago Zone 04-Humboldt IL 515J IP HORIZON LLC 358      
872-275 0 Chicago Zone 01-Calumet IL 515J IP HORIZON LLC 358      
872-277 5 Chicago Zone 05-Austin IL 515J IP HORIZON LLC 358      
872-283 8 Chicago Zone 07-Stewart IL 515J IP HORIZON LLC 358      
872-732 8 Chicago Zone 08-Portsmouth IL 515J IP HORIZON LLC 358      
872-758 9 Chicago Zone 10-Beverly IL 515J IP HORIZON LLC 358      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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