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: 321

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-321 A Morton IL PEORILSCX0X  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 368      
309-321 0 Morton IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 368      
309-321 1 Morton IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2020-03-18   
309-321 2 Morton IL   224C ONVOY, LLC 368   2021-02-26   
309-321 3 Morton IL   224C ONVOY, LLC 368   2021-02-26   
309-321 4 Morton IL   224C ONVOY, LLC 368   2021-08-12   
309-321 5 Morton IL   224C ONVOY, LLC 368   2021-08-12   
309-321 6 Morton IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 368   2014-10-27   
309-321 8 Morton IL   318J COMCAST IP PHONE, LLC 368   2007-09-23   
309-321 9 Morton IL   073H TELNYX LLC 368   2020-07-16   

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

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