Local Calling Guide

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

NXX: 998

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-998 A Parkville MD PKVLMDPKDS0  9212 VERIZON MARYLAND, INC. 238      
443-998 0 Parkville MD PKVLMDPKDS0  9212 VERIZON MARYLAND, INC. 238      
443-998 1 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2016-12-09   
443-998 2 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-998 3 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-998 4 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-998 5 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-998 6 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   
443-998 7 Parkville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-01-11   
443-998 8 Parkville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-998 9 Parkville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   

Last updated: Tue, 15 Nov 2022 00:10:00 UTC

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