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: 985 [Rate centres in NPA 985] [Dial plan for NPA 985]

NXX: 374

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
985-374 A Slidell LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490   2025-05-09   
985-374 0 Slidell LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490   2025-05-09   
985-374 1 Slidell LA   490J BOOST SUBSCRIBERCO L.L.C. 490   2026-08-27   
985-374 2 Slidell LA   490J BOOST SUBSCRIBERCO L.L.C. 490   2026-05-22   
985-374 3 Slidell LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490   2025-11-09   

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.