Local Calling Guide

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

NXX: 307

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-307 A Bel Air MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-307 0 Bel Air MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-307 1 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-31   
443-307 2 Bel Air MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-307 3 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-31   
443-307 4 Bel Air MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-307 5 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2005-12-09   
443-307 6 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2004-10-03   
443-307 7 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2004-10-03   
443-307 8 Bel Air MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-307 9 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2004-10-03   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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