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: 321 [Rate centres in NPA 321] [Dial plan for NPA 321]

NXX: 490

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
321-490 A Eau Gallie FL ORLDFL60DS1  937C ONVOY, LLC - FL 45806   2024-06-10   
321-490 0 Eau Gallie FL   937C ONVOY, LLC - FL 45806   2024-06-10   
321-490 1 Eau Gallie FL   937C ONVOY, LLC - FL 45806   2024-06-10   
321-490 2 Eau Gallie FL   6889 OMNIPOINT MIAMI E LICENSE, LLC 45806   2024-06-20   
321-490 3 Eau Gallie FL   937C ONVOY, LLC - FL 45806   2024-07-05   
321-490 4 Eau Gallie FL   937C ONVOY, LLC - FL 45806   2024-07-05   
321-490 5 Eau Gallie FL   937C ONVOY, LLC - FL 45806   2024-07-05   
321-490 6 Eau Gallie FL   937C ONVOY, LLC - FL 45806   2025-07-19   
321-490 7 Eau Gallie FL   515J IP HORIZON LLC 45806   2025-06-02   
321-490 8 Eau Gallie FL   490J DISH WIRELESS, LLC 45806   2024-08-24   
321-490 9 Eau Gallie FL   982E BANDWIDTH.COM CLEC, LLC - FL 45806   2024-09-15   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.