Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 337 [Rate centres in NPA 337] [Dial plan for NPA 337]

NXX: 691

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-691 A Port Barre LA LFYTLAMAXCZ  515J IP HORIZON LLC 488   2024-05-27   
337-691 1 Port Barre LA   515J IP HORIZON LLC 488   2024-05-27   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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