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: 339

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-339 A Sherwood Forest MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-339 0 Sherwood Forest MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-339 1 Sherwood Forest MD   829J PAETEC ITEL, LLC 238      
443-339 2 Sherwood Forest MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-11-14   
443-339 3 Sherwood Forest MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
443-339 4 Sherwood Forest MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
443-339 5 Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-18   
443-339 6 Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-18   
443-339 7 Sherwood Forest MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-339 8 Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-27   
443-339 9 Sherwood Forest MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-27   

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

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