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: 461

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-461 A Parkville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-461 0 Parkville MD   829J PAETEC ITEL, LLC 238      
443-461 1 Parkville MD   829J PAETEC ITEL, LLC 238      
443-461 2 Parkville MD   829J PAETEC ITEL, LLC 238      
443-461 3 Parkville MD   829J PAETEC ITEL, LLC 238      
443-461 4 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-03-02   
443-461 5 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-03-02   
443-461 6 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-03-02   
443-461 7 Parkville MD   515J IP HORIZON LLC 238   2016-10-14   
443-461 8 Parkville MD   073H TELNYX LLC 238   2017-03-14   
443-461 9 Parkville MD   829J PAETEC ITEL, LLC 238      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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