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: 337 [Rate centres in NPA 337] [Dial plan for NPA 337]

NXX: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-777 A Port Barre LA LFYTLAMAXLZ  3807 NETWORK TELEPHONE CORPORATION - LA 488      
337-777 0 Port Barre LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2016-04-11   
337-777 1 Port Barre LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2016-04-11   
337-777 2 Port Barre LA ABVLLACT0MD  4930 LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 488   2016-07-22   
337-777 3 Port Barre LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2021-04-25   
337-777 4 Port Barre LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2021-04-25   
337-777 5 Port Barre LA LFYTLAATX7X  516C AT&T CORP. 488   2011-08-25   
337-777 6 Port Barre LA LFYTLAMAXUY  508J CENTURYLINK COMMUNICATIONS, LLC 488   2014-09-11   
337-777 7 Port Barre LA LFYTLAMAXLZ  3807 NETWORK TELEPHONE CORPORATION - LA 488   2011-03-05   
337-777 8 Port Barre LA LFYTLAMAXIZ  516J TON80 COMMUNICATIONS, LLC 488   2022-04-11   
337-777 9 Port Barre LA LFYTLAMAX7Z  624H ONVOY SPECTRUM, LLC 488   2023-07-29   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.