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: 904 [Rate centres in NPA 904] [Dial plan for NPA 904]

NXX: 604

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
904-604 A Fernandina Beach FL JCVLFLCL4MD  937C ONVOY, LLC - FL 45204      
904-604 0 Fernandina Beach FL JCVMFLMN4MD  5562 METROPCS, INC. 45204   2022-02-24   
904-604 1 Fernandina Beach FL JCVLFLCL4MD  937C ONVOY, LLC - FL 45204   2021-02-06   
904-604 2 Fernandina Beach FL JCVLFLCL4MD  937C ONVOY, LLC - FL 45204   2021-02-06   
904-604 3 Fernandina Beach FL JCVLFLCL4MD  937C ONVOY, LLC - FL 45204   2021-02-06   
904-604 4 Fernandina Beach FL JCVLFLCL4MD  937C ONVOY, LLC - FL 45204   2021-02-06   
904-604 5 Fernandina Beach FL JCVLFLCL4MD  937C ONVOY, LLC - FL 45204   2021-02-06   
904-604 6 Fernandina Beach FL JCVLFLCL4MD  937C ONVOY, LLC - FL 45204   2020-12-02   
904-604 7 Fernandina Beach FL JCVLFLCL4MD  937C ONVOY, LLC - FL 45204   2020-12-02   
904-604 8 Fernandina Beach FL JCVLFLCL33Z  982E BANDWIDTH.COM CLEC, LLC - FL 45204   2020-12-04   
904-604 9 Fernandina Beach FL JCVLFLCL33Z  982E BANDWIDTH.COM CLEC, LLC - FL 45204   2020-12-04   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.