Local Calling Guide

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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 492

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-492 A Elkridge MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-492 2 Elkridge MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-492 3 Elkridge MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-492 5 Elkridge MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-492 6 Elkridge MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238   2008-08-01   
443-492 7 Elkridge MD   145J TERRA NOVA TELECOM INC. 238   2023-04-29   
443-492 8 Elkridge MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-03-15   
443-492 9 Elkridge MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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