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: 484

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-484 A Edgewood MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-484 0 Edgewood MD   876D ONVOY, LLC - MD 238   2021-07-11   
443-484 1 Edgewood MD   073H TELNYX LLC 238   2017-03-14   
443-484 2 Edgewood MD   318J COMCAST IP PHONE, LLC 238   2007-12-05   
443-484 3 Edgewood MD   5562 METROPCS, INC. 238   2014-12-24   
443-484 4 Edgewood MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-484 5 Edgewood MD   5562 METROPCS, INC. 238   2014-12-22   
443-484 6 Edgewood MD   5562 METROPCS, INC. 238   2015-12-27   
443-484 7 Edgewood MD   318J COMCAST IP PHONE, LLC 238   2014-10-24   
443-484 8 Edgewood MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2017-05-29   
443-484 9 Edgewood MD   624H ONVOY SPECTRUM, LLC 238   2022-01-27   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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