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: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-400 A Rock Island IL   516C AT&T CORP. 634   2024-12-10   
309-400 7 Rock Island IL   516C AT&T CORP. 634      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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