Local Calling Guide

Area code/prefix search

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

NXX: 294

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-294 A West River MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-294 2 West River MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-27   
443-294 3 West River MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-294 5 West River MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-03-25   
443-294 6 West River MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-07-19   
443-294 7 West River MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-294 8 West River MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-294 9 West River MD   515J IP HORIZON LLC 238   2015-03-23   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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