Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 289

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-289 A Westminster MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
443-289 0 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-09-15   
443-289 1 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-09-15   
443-289 2 Westminster MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2011-06-30   
443-289 3 Westminster MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2011-06-30   
443-289 4 Westminster MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-10   
443-289 5 Westminster MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-10   
443-289 6 Westminster MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-10   
443-289 7 Westminster MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-11-23   
443-289 8 Westminster MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2012-11-24   
443-289 9 Westminster MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2014-02-19   

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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