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: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
985-403 A Hammond LA NWORLAMTX6Y  150C VOICESTREAM GSM I, LLC 490      
985-403 0 Hammond LA   150C VOICESTREAM GSM I, LLC 490   2022-03-25   
985-403 1 Hammond LA   150C VOICESTREAM GSM I, LLC 490   2022-03-25   
985-403 2 Hammond LA   150C VOICESTREAM GSM I, LLC 490   2022-03-25   
985-403 3 Hammond LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490   2022-09-21   
985-403 4 Hammond LA   749E ONVOY, LLC - LA 490   2023-08-11   
985-403 5 Hammond LA   749E ONVOY, LLC - LA 490   2023-08-11   
985-403 6 Hammond LA   749E ONVOY, LLC - LA 490   2023-08-11   
985-403 7 Hammond LA   749E ONVOY, LLC - LA 490   2023-08-11   
985-403 8 Hammond LA   939H COMMIO, LLC 490   2022-08-11   
985-403 9 Hammond LA   150C VOICESTREAM GSM I, LLC 490   2022-03-25   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.