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: 589

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-589 A Cockeysville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-589 0 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-589 1 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-589 2 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-589 3 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-589 4 Cockeysville MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-589 5 Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-10-19   
443-589 6 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-07-15   
443-589 7 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-589 8 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-589 9 Cockeysville MD   829J PAETEC ITEL, LLC 238      

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

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