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: 864

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-864 A Columbia MD BLTMMDCH40Z  6664 SPRINT SPECTRUM, L.P. 238      
443-864 0 Columbia MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238      
443-864 1 Columbia MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238      
443-864 2 Columbia MD   6664 SPRINT SPECTRUM, L.P. 238   2003-04-13   
443-864 3 Columbia MD   6664 SPRINT SPECTRUM, L.P. 238   2003-11-01   
443-864 4 Columbia MD   318J COMCAST IP PHONE LLC 238   2007-10-19   
443-864 5 Columbia MD   318J COMCAST IP PHONE LLC 238   2007-10-19   
443-864 6 Columbia MD   5562 METROPCS, INC. 238      
443-864 7 Columbia MD   6664 SPRINT SPECTRUM, L.P. 238      
443-864 8 Columbia MD   6664 SPRINT SPECTRUM, L.P. 238      
443-864 9 Columbia MD   5562 METROPCS, INC. 238      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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