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.
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Switch: DIXNILXA4MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-881 1 Oregon IL 224C ONVOY, LLC 364   2018-10-01   
815-881 4 Oregon IL 224C ONVOY, LLC 364   2021-04-03   
815-881 5 Oregon IL 224C ONVOY, LLC 364   2021-04-03   
815-888 0 Rochelle IL 224C ONVOY, LLC 364   2024-03-13   
815-913 1 Chadwick IL 224C ONVOY, LLC 364   2018-10-01   
815-913 2 Chadwick IL 224C ONVOY, LLC 364   2019-09-07   
815-913 4 Chadwick IL 224C ONVOY, LLC 364   2021-04-03   
815-948 3 Hooppole IL 224C ONVOY, LLC 364   2018-10-01   
815-951 1 Amboy IL 224C ONVOY, LLC 364   2021-04-03   
815-970 9 Sycamore IL 224C ONVOY, LLC 364   2021-04-03   
815-982 2 Tampico IL 224C ONVOY, LLC 364   2018-10-01   
815-982 3 Tampico IL 224C ONVOY, LLC 364   2019-09-07   
815-982 5 Tampico IL 224C ONVOY, LLC 364   2021-04-03   
815-982 6 Tampico IL 224C ONVOY, LLC 364   2021-08-12   
815-989 2 Prophetstown IL 224C ONVOY, LLC 364   2019-09-07   
815-989 5 Prophetstown IL 224C ONVOY, LLC 364   2018-10-01   
815-989 9 Prophetstown IL 224C ONVOY, LLC 364   2021-04-03   
815-991 1 Sycamore IL 224C ONVOY, LLC 364   2018-10-01   
815-991 4 Sycamore IL 224C ONVOY, LLC 364   2019-09-07   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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