Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 464 [Rate centres in NPA 464] [Dial plan for NPA 464]

NXX: 283

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
464-283 A Blue Island IL   224C ONVOY, LLC 358   2026-03-07   
464-283 0 Blue Island IL   224C ONVOY, LLC 358   2026-03-07   
464-283 1 Blue Island IL   224C ONVOY, LLC 358   2026-03-26   
464-283 3 Blue Island IL   490J BOOST SUBSCRIBERCO L.L.C. 358   2026-04-05   
464-283 4 Blue Island IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-03-11   
464-283 5 Blue Island IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-03-11   
464-283 6 Blue Island IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-03-11   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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