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: 539

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-539 A Hampton IL RCISILFP0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 634      
309-539 4 Hampton IL RCISILFP0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 634      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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