Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 504 [Rate centres in NPA 504] [Dial plan for NPA 504]

NXX: 580

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-580 A Venice LA NWORLAMAY2X  624H ONVOY SPECTRUM, LLC 490   2024-03-10   
504-580 0 Venice LA NWORLAMAY2X  624H ONVOY SPECTRUM, LLC 490   2024-03-10   
504-580 1 Venice LA   515J IP HORIZON LLC 490   2024-04-15   
504-580 2 Venice LA NWORLAMAY2X  624H ONVOY SPECTRUM, LLC 490   2024-12-05   
504-580 3 Venice LA NWORLAMAY2X  624H ONVOY SPECTRUM, LLC 490   2024-12-05   
504-580 4 Venice LA NWORLAMAY2X  624H ONVOY SPECTRUM, LLC 490   2024-12-05   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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