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: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-921 A Towson MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-921 0 Towson MD   829J PAETEC ITEL, LLC 238      
443-921 1 Towson MD   829J PAETEC ITEL, LLC 238      
443-921 2 Towson MD   829J PAETEC ITEL, LLC 238      
443-921 3 Towson MD   829J PAETEC ITEL, LLC 238      
443-921 4 Towson MD   829J PAETEC ITEL, LLC 238      
443-921 5 Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-03-07   
443-921 6 Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-03-07   
443-921 7 Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-03-07   
443-921 8 Towson MD   829J PAETEC ITEL, LLC 238      
443-921 9 Towson MD   829J PAETEC ITEL, LLC 238      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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