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: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
321-574 A Melbourne FL ORLEFLIQDS0  7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 45806      
321-574 0 Melbourne FL ORLEFLIQDS0  7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 45806      
321-574 1 Melbourne FL ORLEFLIQDS0  7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 45806   2005-07-19   
321-574 2 Melbourne FL ORLEFLIQDS0  7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 45806   2005-07-19   
321-574 3 Melbourne FL ORLEFLIQDS0  7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 45806      
321-574 4 Melbourne FL ORLEFLIQDS0  7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 45806   2006-10-21   
321-574 5 Melbourne FL ORLEFLIQDS0  7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 45806      
321-574 6 Melbourne FL ORLFFLEJDMD  4802 LEVEL 3 COMMUNICATIONS, LLC - FL 45806   2009-11-01   
321-574 7 Melbourne FL ORLDFLMAYBY  829J PAETEC ITEL, LLC 45806   2009-11-06   
321-574 8 Melbourne FL ORLFFLEJDMD  4802 LEVEL 3 COMMUNICATIONS, LLC - FL 45806   2009-11-01   
321-574 9 Melbourne FL ORLFFLEJDMD  4802 LEVEL 3 COMMUNICATIONS, LLC - FL 45806   2010-08-19   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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