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: 551

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-551 A Woodlawn MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-551 1 Woodlawn MD   145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-551 3 Woodlawn MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-05-12   
443-551 4 Woodlawn MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      

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

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