Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 336 [Rate centres in NPA 336] [Dial plan for NPA 336]

NXX: 600

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
336-600 A Oldtown NC GNBONCCKX9X  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424      
336-600 0 Oldtown NC GNBONCCKX9X  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2014-10-23   
336-600 1 Oldtown NC GNBONCCKX9X  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2010-12-20   
336-600 2 Oldtown NC GNBONCEU27Z  998E BANDWIDTH.COM CLEC, LLC - NC 424   2021-06-03   
336-600 3 Oldtown NC GNBONCEU24Z  638E ONVOY, LLC - NC 424   2022-09-30   
336-600 4 Oldtown NC GNBONCEU24Z  638E ONVOY, LLC - NC 424   2022-09-30   
336-600 5 Oldtown NC GNBONCEU24Z  638E ONVOY, LLC - NC 424   2022-09-30   
336-600 6 Oldtown NC GNBPNCEM5MD  965H FRACTEL, LLC 424   2020-08-27   
336-600 7 Oldtown NC   638E ONVOY, LLC - NC 424   2025-10-26   
336-600 8 Oldtown NC GNBONCCKX3Y  073H TELNYX LLC 424   2022-09-11   
336-600 9 Oldtown NC GNBONCEU24Z  638E ONVOY, LLC - NC 424   2022-11-26   

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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