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: PHLAPAMK17Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
215-391 A Philadelphia Zone 1 PA 784E BLOCK LINE SYSTEMS, LLC PA 228   2007-12-06   
484-378 A Coatesville PA 784E BLOCK LINE SYSTEMS, LLC PA 228   2009-05-25   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.