Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: ULLNILXERS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
618-845 A Ullin IL 1015 FRONTIER NORTH, INC. - IL 362      
618-845 3 Ullin IL 1015 FRONTIER NORTH, INC. - IL 362      
618-845 9 Ullin IL 1015 FRONTIER NORTH, INC. - IL 362      

Last updated: Sat, 02 May 2026 12:20:53 UTC

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