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: CRDLILABSMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
618-203 A Carbondale IL 6529 T-MOBILE USA, INC. 362      
618-412 A Carbondale IL 6529 T-MOBILE USA, INC. 362      
618-434 A Carbondale IL 6529 T-MOBILE USA, INC. 362      
618-579 A Marion IL 6529 T-MOBILE USA, INC. 362      
618-739 A Brookport IL 5562 METROPCS, INC. 362      
730-235 A Murphysboro IL 6529 T-MOBILE USA, INC. 362   2024-03-24   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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