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: TRENNJTECMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
609-244 3 Princeton NJ 732J NUSO, LLC 222   2024-08-19   
609-728 3 Trenton NJ 732J NUSO, LLC 222   2025-01-03   
609-874 1 Princeton NJ 732J NUSO, LLC 222   2024-07-07   
640-238 A Burlington NJ 732J NUSO, LLC 222      
640-238 1 Burlington NJ 732J NUSO, LLC 222   2023-01-13   
640-252 5 Princeton NJ 732J NUSO, LLC 222   2024-04-12   
640-270 0 Trenton NJ 732J NUSO, LLC 222   2025-01-24   

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

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