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: 342

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-342 A Solomons MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-342 1 Solomons MD   829J PAETEC ITEL, LLC 238      
443-342 2 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
443-342 3 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-13   
443-342 4 Solomons MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-01-04   
443-342 5 Solomons MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-342 6 Solomons MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-07-06   
443-342 7 Solomons MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-342 8 Solomons MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-06-16   
443-342 9 Solomons MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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