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: 831

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-831 A St Landry LA ALXNLAMAX5Y  792K CHARTER IP ENABLED SERVICES, LLC 486   2025-01-21   
318-831 0 St Landry LA   624H ONVOY SPECTRUM, LLC 486   2023-07-21   
318-831 1 St Landry LA   792K CHARTER IP ENABLED SERVICES, LLC 486   2023-07-09   
318-831 2 St Landry LA   516C AT&T CORP. 486   2024-09-30   
318-831 4 St Landry LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 486   2023-02-06   
318-831 8 St Landry LA   260H CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 486   2024-03-11   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.