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.

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   
464-283 8 Blue Island IL   6529 T-MOBILE USA, INC. 358   2026-04-23   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.