Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Boomer, NC

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
336-304 A NWBONC021MD  792K CHARTER IP ENABLED SERVICES, LLC 424   2025-02-05   
336-304 0 NWBONC021MD  792K CHARTER IP ENABLED SERVICES, LLC 424   2018-03-30   
336-304 5 GNBONCCKX9X  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 424   2024-09-04   
336-921 A CHMPNCAADS0  0510 WILKES TEL. MEMBERSHIP CORP. 424      

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

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