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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
321-257 A Sanford FL ORLDFLMAYBY  829J PAETEC ITEL, LLC 45806   2025-01-21   
321-257 0 Sanford FL   829J PAETEC ITEL, LLC 45806      
321-257 1 Sanford FL   829J PAETEC ITEL, LLC 45806      
321-257 2 Sanford FL   937C ONVOY, LLC - FL 45806   2016-03-03   
321-257 3 Sanford FL   937C ONVOY, LLC - FL 45806   2016-03-03   
321-257 4 Sanford FL   982E BANDWIDTH.COM CLEC, LLC - FL 45806   2016-07-10   
321-257 5 Sanford FL   982E BANDWIDTH.COM CLEC, LLC - FL 45806   2016-07-10   
321-257 6 Sanford FL   829J PAETEC ITEL, LLC 45806   2008-11-16   
321-257 7 Sanford FL   4802 LEVEL 3 COMMUNICATIONS, LLC - FL 45806   2015-08-23   
321-257 8 Sanford FL   4802 LEVEL 3 COMMUNICATIONS, LLC - FL 45806   2010-01-01   
321-257 9 Sanford FL   937C ONVOY, LLC - FL 45806   2009-08-13   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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