Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 609

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-609 A Altona IL GLBGILXD5MD  593K MCC TELEPHONY LLC 977      
309-609 9 Altona IL GLBGILXD5MD  593K MCC TELEPHONY LLC 977   2010-07-24   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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