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: 438

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-438 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-438 0 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-12-14   
443-438 1 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-01-11   
443-438 2 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2009-09-17   
443-438 3 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 4 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 5 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 6 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 7 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 8 Baltimore MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-09-24   
443-438 9 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   

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

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