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: 351

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-351 A Odenton MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-351 0 Odenton MD   829J PAETEC ITEL, LLC 238      
443-351 1 Odenton MD   829J PAETEC ITEL, LLC 238      
443-351 2 Odenton MD   829J PAETEC ITEL, LLC 238      
443-351 3 Odenton MD   829J PAETEC ITEL, LLC 238      
443-351 4 Odenton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-09-03   
443-351 5 Odenton MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-01-19   
443-351 6 Odenton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-03-01   
443-351 7 Odenton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-351 8 Odenton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-27   
443-351 9 Odenton MD   829J PAETEC ITEL, LLC 238      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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