Local Calling Guide

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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 320

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-320 A Baltimore MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-320 0 Baltimore MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-320 1 Baltimore MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-320 2 Baltimore MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-320 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-12-03   
443-320 4 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-320 5 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-320 6 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-01-06   
443-320 7 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238   2012-03-13   
443-320 8 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-01-06   
443-320 9 Baltimore MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      

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

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