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: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-388 A Knoxville IL MCMBILXDX2X  318J COMCAST IP PHONE, LLC 977      
309-388 0 Knoxville IL MCMBILXDX2X  318J COMCAST IP PHONE, LLC 977      
309-388 1 Knoxville IL MCMBILXDWMD  073H TELNYX LLC 977   2020-07-13   
309-388 2 Knoxville IL GLBGILXDDMD  224C ONVOY, LLC 977   2019-09-06   
309-388 3 Knoxville IL GLBGILXDDMD  224C ONVOY, LLC 977   2021-02-12   
309-388 4 Knoxville IL GLBGILXDDMD  224C ONVOY, LLC 977   2021-02-12   
309-388 6 Knoxville IL MCMBILXDHMD  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 977   2018-07-27   
309-388 7 Knoxville IL GLBGILXDDMD  224C ONVOY, LLC 977   2021-07-05   
309-388 8 Knoxville IL GLBGILXDDMD  224C ONVOY, LLC 977   2019-03-14   
309-388 9 Knoxville IL GLBGILXDXMD  495J STRATUS NETWORKS 977   2021-02-28   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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