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: 573

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-573 A Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-573 0 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-573 1 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-573 2 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-573 3 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-573 4 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-573 5 Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2005-08-30   
443-573 6 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-573 7 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-04-13   
443-573 8 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      
443-573 9 Baltimore MD CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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