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.

NPA: 223 [Rate centres in NPA 223] [Dial plan for NPA 223]

NXX: 301

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
223-301 A Reedsville (Mifflin) PA HRBGPAHAXTX  318J COMCAST IP PHONE, LLC 226      
223-301 4 Reedsville (Mifflin) PA HRBGPAHAXTX  318J COMCAST IP PHONE, LLC 226   2022-11-13   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.