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: 514

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-514 A Catonsville MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-514 0 Catonsville MD   2589 US LEC OF MARYLAND, INC. 238      
443-514 1 Catonsville MD   2589 US LEC OF MARYLAND, INC. 238      
443-514 2 Catonsville MD   2589 US LEC OF MARYLAND, INC. 238      
443-514 3 Catonsville MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2021-05-13   
443-514 4 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-514 5 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-514 6 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-514 7 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-514 8 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-03-19   
443-514 9 Catonsville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2021-06-06   

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

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