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: 318 [Rate centres in NPA 318] [Dial plan for NPA 318]

NXX: 551

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-551 A Monroe LA MONRLAMAX5Y  6664 SPRINT SPECTRUM, L.P. 486      
318-551 9 Monroe LA MONRLAMAX5Y  6664 SPRINT SPECTRUM, L.P. 486   2012-01-09   

Last updated: Sat, 25 Feb 2023 02:10:49 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.