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: 398

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-398 A Sykesville MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-398 0 Sykesville MD   5562 METROPCS, INC. 238      
443-398 1 Sykesville MD   5562 METROPCS, INC. 238      
443-398 2 Sykesville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-26   
443-398 3 Sykesville MD   876D ONVOY, LLC - MD 238   2012-02-29   
443-398 4 Sykesville MD   5562 METROPCS, INC. 238      
443-398 5 Sykesville MD   5562 METROPCS, INC. 238      
443-398 6 Sykesville MD   5562 METROPCS, INC. 238      
443-398 7 Sykesville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-398 8 Sykesville MD   318J COMCAST IP PHONE, LLC 238   2016-04-22   
443-398 9 Sykesville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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