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: 458

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-458 A Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-458 0 Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-458 1 Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-458 2 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-09-12   
443-458 3 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-09-12   
443-458 4 Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-458 5 Annapolis MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2007-08-13   
443-458 6 Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-458 7 Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-458 8 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-07-02   
443-458 9 Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      

Last updated: Fri, 13 May 2022 22:16:13 UTC

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