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: 601

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-601 A Fallston MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-601 0 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-07   
443-601 1 Fallston MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-601 2 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-07   
443-601 3 Fallston MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-23   
443-601 4 Fallston MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-23   
443-601 5 Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2017-08-07   
443-601 6 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-07   
443-601 7 Fallston MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-601 8 Fallston MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-25   
443-601 9 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-04-26   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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