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.

Switch: JCVLFLCL92Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
904-324 A Lawtey FL 624H ONVOY SPECTRUM, LLC 45204   2024-04-28   
904-558 A Kingsley Lake FL 624H ONVOY SPECTRUM, LLC 45204      
904-561 A Jacksonville Beach FL 624H ONVOY SPECTRUM, LLC 45204      
904-756 A Lawtey FL 624H ONVOY SPECTRUM, LLC 45204      
904-850 A Jacksonville FL 624H ONVOY SPECTRUM, LLC 45204      
904-869 A Jacksonville FL 624H ONVOY SPECTRUM, LLC 45204      
904-916 A Jacksonville FL 624H ONVOY SPECTRUM, LLC 45204      
904-960 A Yulee FL 624H ONVOY SPECTRUM, LLC 45204   2024-03-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.