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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: PHLAPAMKXNX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
267-239 9 Philadelphia Zone 1 PA 732J NUSO, LLC 228   2024-11-03   
302-271 A Georgetown DE 732J NUSO, LLC 228      
302-271 1 Georgetown DE 732J NUSO, LLC 228   2023-01-14   
445-269 0 Philadelphia Zone 1 PA 732J NUSO, LLC 228   2024-11-12   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.