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: 452

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-452 A Baltimore MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-452 0 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-02-07   
443-452 1 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-10-30   
443-452 2 Baltimore MD   876D ONVOY, LLC - MD 238   2024-02-24   
443-452 3 Baltimore MD   876D ONVOY, LLC - MD 238   2024-02-24   
443-452 4 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-10-31   
443-452 5 Baltimore MD   876D ONVOY, LLC - MD 238   2024-02-24   
443-452 6 Baltimore MD   876D ONVOY, LLC - MD 238   2024-02-24   
443-452 7 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   
443-452 8 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   
443-452 9 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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