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: PTTWPAPTCMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
484-374 A Pottstown PA 7513 CTSI, INC. - PA 228   2009-10-22   

Last updated: Sat, 29 Jun 2019 02:32:58 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.