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: 229

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-229 A Severna Park MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-229 0 Severna Park MD   829J PAETEC ITEL, LLC 238      
443-229 1 Severna Park MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-11-30   
443-229 2 Severna Park MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-02-12   
443-229 3 Severna Park MD   829J PAETEC ITEL, LLC 238      
443-229 4 Severna Park MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-08-20   
443-229 5 Severna Park MD   876D ONVOY, LLC - MD 238   2025-02-01   
443-229 6 Severna Park MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-09-25   
443-229 7 Severna Park MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-09-25   
443-229 8 Severna Park MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2022-10-07   
443-229 9 Severna Park MD   829J PAETEC ITEL, LLC 238      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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