Local Calling Guide

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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
443-678 A Parkville MD WHMRMDWMRS2  9212 VERIZON MARYLAND, INC. 238      
443-678 0 Parkville MD   876D ONVOY, LLC - MD 238   2014-08-31   
443-678 1 Parkville MD   9212 VERIZON MARYLAND, INC. 238      
443-678 2 Parkville MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-02-05   
443-678 3 Parkville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-06-11   
443-678 4 Parkville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-05-01   
443-678 5 Parkville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-678 6 Parkville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-678 7 Parkville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-678 8 Parkville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-11-27   
443-678 9 Parkville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-11-27   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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