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: 917

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-917 A Columbia MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-917 0 Columbia MD   515J IP HORIZON LLC 238      
443-917 1 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-917 2 Columbia MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-917 3 Columbia MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-917 4 Columbia MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-917 5 Columbia MD   145J TERRA NOVA TELECOM INC. 238      
443-917 6 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-917 7 Columbia MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238      
443-917 8 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-917 9 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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