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: 327 [Rate centres in NPA 327] [Dial plan for NPA 327]

NXX: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
327-204 A Hickory Ridge AR JNBOARMAX1X  624H ONVOY SPECTRUM, LLC 528   2025-03-09   
327-204 0 Hickory Ridge AR JNBOARMAX1X  624H ONVOY SPECTRUM, LLC 528   2025-03-09   
327-204 1 Hickory Ridge AR LTRKARFRXJZ  318J COMCAST IP PHONE, LLC 528   2025-07-17   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.