Local Calling Guide

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

NXX: 674

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-674 A North East MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-674 0 North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-674 1 North East MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-674 2 North East MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-674 3 North East MD BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-674 4 North East MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-674 5 North East MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-674 6 North East MD BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-674 7 North East MD BLTMMDCHFMD  5562 METROPCS, INC. 238      
443-674 8 North East MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-674 9 North East MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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