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: 920

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-920 A Bloomington IL BLTNILTSCMD  321J HD CARRIER LLC 366      
309-920 6 Bloomington IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 366   2023-12-16   
309-920 7 Bloomington IL   224C ONVOY, LLC 366   2023-10-16   
309-920 8 Bloomington IL   321J HD CARRIER LLC 366   2023-05-11   
309-920 9 Bloomington IL   321J HD CARRIER LLC 366   2023-05-11   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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