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: 728 [Rate centres in NPA 728] [Dial plan for NPA 728]

NXX: 247

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
728-247 A West Palm Beach FL   937C ONVOY, LLC - FL 46018   2026-08-21   
728-247 0 West Palm Beach FL   937C ONVOY, LLC - FL 46018   2026-08-21   
728-247 1 West Palm Beach FL   937C ONVOY, LLC - FL 46018   2026-08-31   
728-247 2 West Palm Beach FL   937C ONVOY, LLC - FL 46018   2026-09-12   
728-247 3 West Palm Beach FL   937C ONVOY, LLC - FL 46018   2026-09-12   
728-247 4 West Palm Beach FL   982E BANDWIDTH.COM CLEC, LLC - FL 46018   2026-10-17   
728-247 5 West Palm Beach FL   321J HD CARRIER LLC 46018   2026-08-24   
728-247 6 West Palm Beach FL   321J HD CARRIER LLC 46018   2026-08-24   
728-247 7 West Palm Beach FL   321J HD CARRIER LLC 46018   2026-08-24   
728-247 8 West Palm Beach FL   982E BANDWIDTH.COM CLEC, LLC - FL 46018   2026-10-17   
728-247 9 West Palm Beach FL   982E BANDWIDTH.COM CLEC, LLC - FL 46018   2026-10-17   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.