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: 534

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
321-534 A Titusville FL   937C ONVOY, LLC - FL 45806   2026-03-26   
321-534 0 Titusville FL   937C ONVOY, LLC - FL 45806   2026-03-26   
321-534 1 Titusville FL   937C ONVOY, LLC - FL 45806   2026-05-03   
321-534 6 Titusville FL   8300 TELEPORT COMMUNICATIONS AMERICA, LLC - FL 45806   2026-04-20   
321-534 8 Titusville FL   937C ONVOY, LLC - FL 45806   2026-05-03   
321-534 9 Titusville FL   937C ONVOY, LLC - FL 45806   2026-05-03   

Last updated: Sun, 17 May 2026 03:26:51 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.