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: 947

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-947 A Macomb IL MCMBIL361MD  475J CALLWORKS CORPORATION 977      
309-947 1 Macomb IL MCMBIL361MD  475J CALLWORKS CORPORATION 977   2023-12-11   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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