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: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-403 A Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-403 0 Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-403 1 Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-403 2 Aberdeen MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-403 3 Aberdeen MD   145J TERRA NOVA TELECOM INC. 236      
443-403 4 Aberdeen MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-403 5 Aberdeen MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-403 6 Aberdeen MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-403 7 Aberdeen MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-403 8 Aberdeen MD BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
443-403 9 Aberdeen MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      

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

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