Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 321 [Rate centres in NPA 321] [Dial plan for NPA 321]

NXX: 524

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
321-524 A Melbourne FL   937C ONVOY, LLC - FL 45806   2025-11-15   
321-524 0 Melbourne FL   937C ONVOY, LLC - FL 45806   2025-11-15   
321-524 1 Melbourne FL   937C ONVOY, LLC - FL 45806   2025-11-15   
321-524 2 Melbourne FL   937C ONVOY, LLC - FL 45806   2025-11-15   
321-524 3 Melbourne FL   937C ONVOY, LLC - FL 45806   2025-11-17   
321-524 6 Melbourne FL   8300 TELEPORT COMMUNICATIONS AMERICA, LLC - FL 45806   2026-01-09   
321-524 8 Melbourne FL   937C ONVOY, LLC - FL 45806   2025-11-17   
321-524 9 Melbourne FL   937C ONVOY, LLC - FL 45806   2025-12-14   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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