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: CHCGILNEXJX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
219-213 A Crown Point IN 318J COMCAST IP PHONE, LLC 358      
219-300 A Lowell IN 318J COMCAST IP PHONE, LLC 358      
219-305 A Lake of the Four Seasons IN 318J COMCAST IP PHONE, LLC 358      
219-427 A Gary IN 318J COMCAST IP PHONE, LLC 358      
219-595 A Highland IN 318J COMCAST IP PHONE, LLC 358      
224-318 A Arlington Heights IL 318J COMCAST IP PHONE, LLC 358      
224-326 A Northbrook IL 318J COMCAST IP PHONE, LLC 358      
224-333 A Algonquin IL 318J COMCAST IP PHONE, LLC 358      
224-338 A Round Lake IL 318J COMCAST IP PHONE, LLC 358      
224-398 A Arlington Heights IL 318J COMCAST IP PHONE, LLC 358      
224-408 A Wilmette IL 318J COMCAST IP PHONE, LLC 358      
224-470 A Skokie IL 318J COMCAST IP PHONE, LLC 358      
224-475 A Libertyville IL 318J COMCAST IP PHONE, LLC 358      
224-530 A Plato Center IL 318J COMCAST IP PHONE, LLC 358      
224-610 A Waukegan IL 318J COMCAST IP PHONE, LLC 358      
224-676 A Wheeling IL 318J COMCAST IP PHONE, LLC 358      
224-714 A Evanston IL 318J COMCAST IP PHONE, LLC 358      
224-757 A Round Lake IL 318J COMCAST IP PHONE, LLC 358      
224-908 A Fox Lake IL 318J COMCAST IP PHONE, LLC 358      
224-985 A Park Ridge IL 318J COMCAST IP PHONE, LLC 358      
312-763 A Chicago Zone 01-Calumet IL 318J COMCAST IP PHONE, LLC 358      
312-837 A Chicago Zone 01-Calumet IL 318J COMCAST IP PHONE, LLC 358      
312-982 A Chicago Zone 01-Calumet IL 318J COMCAST IP PHONE, LLC 358      
331-248 A Geneva IL 318J COMCAST IP PHONE, LLC 358      
331-775 A Downers Grove IL 318J COMCAST IP PHONE, LLC 358      
331-806 A Wheaton IL 318J COMCAST IP PHONE, LLC 358      
331-979 A Elmhurst IL 318J COMCAST IP PHONE, LLC 358      
630-229 A Aurora IL 318J COMCAST IP PHONE, LLC 358      
630-402 A Geneva IL 318J COMCAST IP PHONE, LLC 358      
630-473 A West Chicago IL 318J COMCAST IP PHONE, LLC 358      
630-474 A Glen Ellyn IL 318J COMCAST IP PHONE, LLC 358      
630-501 A Elmhurst IL 318J COMCAST IP PHONE, LLC 358      
708-223 A Bellwood IL 318J COMCAST IP PHONE, LLC 358      
708-248 A Chicago Heights IL 318J COMCAST IP PHONE, LLC 358      
708-251 A Lansing IL 318J COMCAST IP PHONE, LLC 358      
708-298 A Cicero IL 318J COMCAST IP PHONE, LLC 358      
708-304 A Crete IL 318J COMCAST IP PHONE, LLC 358      
708-505 A La Grange IL 318J COMCAST IP PHONE, LLC 358      
708-529 A Oak Lawn IL 318J COMCAST IP PHONE, LLC 358      
708-540 A Bellwood IL 318J COMCAST IP PHONE, LLC 358      
708-629 A Blue Island IL 318J COMCAST IP PHONE, LLC 358      
708-631 A Blue Island IL 318J COMCAST IP PHONE, LLC 358      
708-689 A Oak Park IL 318J COMCAST IP PHONE, LLC 358      
708-694 A Mokena IL 318J COMCAST IP PHONE, LLC 358      
708-856 A Chicago Heights IL 318J COMCAST IP PHONE, LLC 358      
708-897 A Blue Island IL 318J COMCAST IP PHONE, LLC 358      
708-905 A La Grange IL 318J COMCAST IP PHONE, LLC 358      
708-925 A Blue Island IL 318J COMCAST IP PHONE, LLC 358      
708-960 A Homewood IL 318J COMCAST IP PHONE, LLC 358      
708-967 A Chicago Zone 03-Kildare IL 318J COMCAST IP PHONE, LLC 358      
773-417 A Chicago Zone 05-Austin IL 318J COMCAST IP PHONE, LLC 358      
773-530 A Chicago Zone 09-South Chicago IL 318J COMCAST IP PHONE, LLC 358      
773-754 A Chicago Zone 02-Edgewater IL 318J COMCAST IP PHONE, LLC 358      
773-891 A Chicago Zone 07-Stewart IL 318J COMCAST IP PHONE, LLC 358      
773-940 A Chicago Zone 06-Kedzie IL 318J COMCAST IP PHONE, LLC 358      
779-229 A Depue IL 318J COMCAST IP PHONE, LLC 358      
779-254 A Frankfort IL 318J COMCAST IP PHONE, LLC 358      
815-250 A La Salle IL 318J COMCAST IP PHONE, LLC 358      
815-390 A Braidwood IL 318J COMCAST IP PHONE, LLC 358      
815-581 A Spring Grove IL 318J COMCAST IP PHONE, LLC 358      
815-893 A Crystal Lake IL 318J COMCAST IP PHONE, LLC 358      
847-603 A Antioch IL 318J COMCAST IP PHONE, LLC 358      
847-749 A Arlington Heights IL 318J COMCAST IP PHONE, LLC 358      
847-834 A Glenview IL 318J COMCAST IP PHONE, LLC 358      
847-873 A Arlington Heights IL 318J COMCAST IP PHONE, LLC 358      
872-206 A Chicago Zone 04-Humboldt IL 318J COMCAST IP PHONE, LLC 358      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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