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: 774

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-774 A Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-774 0 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-04-27   
443-774 1 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-04-27   
443-774 2 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-774 3 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-774 4 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-10-07   
443-774 5 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-07-20   
443-774 6 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-774 7 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-774 8 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-04-19   
443-774 9 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-01-19   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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