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: 441

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-441 A Glenwood MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-441 0 Glenwood MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-441 1 Glenwood MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-441 2 Glenwood MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2016-10-16   
443-441 3 Glenwood MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-441 4 Glenwood MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-441 5 Glenwood MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2018-01-22   
443-441 6 Glenwood MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-441 7 Glenwood MD   508J CENTURYLINK COMMUNICATIONS LLC 238   2014-06-12   
443-441 8 Glenwood MD BLTMMDCHLMD  082H LOCAL ACCESS LLC - MD 238   2016-05-31   
443-441 9 Glenwood MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

Last updated: Fri, 23 Jul 2021 12:43:22 UTC

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