Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 728 [Rate centres in NPA 728] [Dial plan for NPA 728]

NXX: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
728-237 A West Palm Beach FL   515J IP HORIZON LLC 46018   2025-06-22   
728-237 0 West Palm Beach FL   624H ONVOY SPECTRUM, LLC 46018   2025-10-14   
728-237 1 West Palm Beach FL   515J IP HORIZON LLC 46018   2025-06-22   
728-237 2 West Palm Beach FL   515J IP HORIZON LLC 46018   2025-06-22   
728-237 3 West Palm Beach FL   624H ONVOY SPECTRUM, LLC 46018   2025-10-14   
728-237 4 West Palm Beach FL   624H ONVOY SPECTRUM, LLC 46018   2025-10-14   
728-237 5 West Palm Beach FL   624H ONVOY SPECTRUM, LLC 46018   2025-10-14   
728-237 6 West Palm Beach FL   624H ONVOY SPECTRUM, LLC 46018   2025-10-14   
728-237 7 West Palm Beach FL   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 46018   2025-09-29   
728-237 8 West Palm Beach FL   624H ONVOY SPECTRUM, LLC 46018   2025-10-14   
728-237 9 West Palm Beach FL   624H ONVOY SPECTRUM, LLC 46018   2025-10-14   

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

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