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: 874

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-874 A Baltimore MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-874 0 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-03-22   
443-874 1 Baltimore MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-03   
443-874 2 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 3 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 4 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 5 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 6 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 7 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 8 Baltimore MD   829J PAETEC ITEL, LLC 238   2004-06-12   
443-874 9 Baltimore MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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