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: 332

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-332 A Stanford IL BLTNILATX5X  197D VONAGE AMERICA LLC 366      
309-332 0 Stanford IL   197D VONAGE AMERICA LLC 366   2018-09-22   
309-332 1 Stanford IL   224C ONVOY, LLC 366   2019-07-14   
309-332 2 Stanford IL   624H ONVOY SPECTRUM, LLC 366   2023-06-02   
309-332 3 Stanford IL   224C ONVOY, LLC 366   2019-01-17   
309-332 4 Stanford IL   224C ONVOY, LLC 366   2020-05-21   
309-332 5 Stanford IL   224C ONVOY, LLC 366   2020-05-21   
309-332 6 Stanford IL   224C ONVOY, LLC 366   2020-05-21   
309-332 7 Stanford IL   495J STRATUS NETWORKS 366   2020-10-14   
309-332 8 Stanford IL   073H TELNYX LLC 366   2020-07-20   
309-332 9 Stanford IL   224C ONVOY, LLC 366   2019-07-14   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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