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: 542

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
321-542 A Cocoa FL   937C ONVOY, LLC - FL 45806   2026-09-28   
321-542 0 Cocoa FL   937C ONVOY, LLC - FL 45806   2026-09-28   
321-542 1 Cocoa FL   937C ONVOY, LLC - FL 45806   2026-09-28   
321-542 2 Cocoa FL   937C ONVOY, LLC - FL 45806   2026-09-29   
321-542 3 Cocoa FL   6502 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 45806   2026-10-23   
321-542 4 Cocoa FL   6502 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 45806   2026-11-25   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.