Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 732

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-732 A Silver Run MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-732 0 Silver Run MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-732 1 Silver Run MD   829J PAETEC ITEL, LLC 238   2004-02-05   
443-732 2 Silver Run MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-732 3 Silver Run MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-732 4 Silver Run MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-732 5 Silver Run MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-23   
443-732 6 Silver Run MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-01-19   
443-732 7 Silver Run MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-732 8 Silver Run MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-732 9 Silver Run MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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