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: 383

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-383 A Silver Run MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-383 0 Silver Run MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 1 Silver Run MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-383 2 Silver Run MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 3 Silver Run MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-25   
443-383 4 Silver Run MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-25   
443-383 5 Silver Run MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 6 Silver Run MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 7 Silver Run MD   508J CENTURYLINK COMMUNICATIONS LLC 238   2014-06-12   
443-383 8 Silver Run MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-383 9 Silver Run MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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