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: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-550 A North Beach MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-550 1 North Beach MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-550 2 North Beach MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-550 3 North Beach MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-550 4 North Beach MD BLTMMD91DS2  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238      
443-550 5 North Beach MD PIVLMDPKFMD  9170 BROADVIEW NETWORKS, INC. - MD 238      
443-550 6 North Beach MD NRBHMDNEDS0  9212 VERIZON MARYLAND, INC. 238      
443-550 7 North Beach MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-550 8 North Beach MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-550 9 North Beach MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      

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

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