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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-596 A Essex MD   4773 XO MARYLAND, LLC 238      
443-596 0 Essex MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-596 2 Essex MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-04-30   
443-596 3 Essex MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2017-08-16   
443-596 4 Essex MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-10-20   
443-596 5 Essex MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-10-20   
443-596 6 Essex MD   876D ONVOY, LLC - MD 238   2018-05-27   
443-596 7 Essex MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-06-11   
443-596 8 Essex MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2018-09-28   
443-596 9 Essex MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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