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: 288

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
728-288 A Boynton Beach FL MIAMFLGR86Z  624H ONVOY SPECTRUM, LLC 46018   2024-03-15   
728-288 0 Boynton Beach FL MIAMFLGR86Z  624H ONVOY SPECTRUM, LLC 46018   2024-03-15   
728-288 1 Boynton Beach FL MIAMFLGR86Z  624H ONVOY SPECTRUM, LLC 46018   2024-03-15   
728-288 2 Boynton Beach FL MIAMFLGR86Z  624H ONVOY SPECTRUM, LLC 46018   2024-03-15   
728-288 3 Boynton Beach FL MIAMFLGR86Z  624H ONVOY SPECTRUM, LLC 46018   2024-03-15   
728-288 4 Boynton Beach FL MIAMFLGR86Z  624H ONVOY SPECTRUM, LLC 46018   2024-03-15   
728-288 5 Boynton Beach FL   515J IP HORIZON LLC 46018   2025-06-03   
728-288 6 Boynton Beach FL MIAUFLWSZMD  490J DISH WIRELESS, LLC 46018   2024-08-24   
728-288 7 Boynton Beach FL MIASFL680MD  982E BANDWIDTH.COM CLEC, LLC - FL 46018   2024-08-10   
728-288 8 Boynton Beach FL MIASFL680MD  982E BANDWIDTH.COM CLEC, LLC - FL 46018   2024-08-10   
728-288 9 Boynton Beach FL MIASFL680MD  982E BANDWIDTH.COM CLEC, LLC - FL 46018   2024-08-10   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.