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: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
336-400 A Champion NC NWBONC021MD  792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
336-400 0 Champion NC   792K CHARTER IP ENABLED SERVICES, LLC 424   2018-03-30   
336-400 4 Champion NC   965H FRACTEL, LLC 424   2020-08-20   
336-400 6 Champion NC   3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2024-12-15   

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

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