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: 538

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
321-538 A Melbourne FL ORLDFL60DS1  937C ONVOY, LLC - FL 45806   2026-05-03   
321-538 0 Melbourne FL ORLDFL60DS1  937C ONVOY, LLC - FL 45806   2026-05-03   
321-538 1 Melbourne FL ORLDFL60DS1  937C ONVOY, LLC - FL 45806   2026-05-03   
321-538 2 Melbourne FL   937C ONVOY, LLC - FL 45806   2026-08-01   
321-538 3 Melbourne FL   937C ONVOY, LLC - FL 45806   2026-08-01   
321-538 4 Melbourne FL   937C ONVOY, LLC - FL 45806   2026-08-01   
321-538 5 Melbourne FL   937C ONVOY, LLC - FL 45806   2026-08-01   
321-538 9 Melbourne FL ORLDFL60DS1  937C ONVOY, LLC - FL 45806   2026-06-22   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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