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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-644 2 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-22   
443-644 3 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-644 4 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-644 6 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-22   
443-644 7 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-22   
443-645 A Millersville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-645 0 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-12-04   
443-645 1 Millersville MD   829J PAETEC ITEL, LLC 238      
443-645 2 Millersville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-645 3 Millersville MD   318J COMCAST IP PHONE, LLC 238   2015-04-17   
443-645 4 Millersville MD   876D ONVOY, LLC - MD 238   2016-03-24   
443-645 5 Millersville MD   876D ONVOY, LLC - MD 238   2016-03-24   
443-645 6 Millersville MD   876D ONVOY, LLC - MD 238   2016-10-20   
443-645 7 Millersville MD   964H BARR TELL USA, INC. 238   2016-12-17   
443-645 8 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-05-31   
443-645 9 Millersville MD   073H TELNYX LLC 238   2017-04-26   
443-646 A North Beach MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-646 1 North Beach MD   829J PAETEC ITEL, LLC 238      
443-646 2 North Beach MD   318J COMCAST IP PHONE, LLC 238   2016-12-02   
443-646 3 North Beach MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-04   
443-646 4 North Beach MD   876D ONVOY, LLC - MD 238   2016-03-23   
443-646 5 North Beach MD   318J COMCAST IP PHONE, LLC 238   2014-05-01   
443-646 6 North Beach MD   318J COMCAST IP PHONE, LLC 238   2015-08-05   
443-646 7 North Beach MD   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-646 8 North Beach MD   876D ONVOY, LLC - MD 238   2016-03-23   
443-646 9 North Beach MD   073H TELNYX LLC 238   2017-04-26   
443-647 A New Windsor MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-647 0 New Windsor MD   145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-647 1 New Windsor MD   829J PAETEC ITEL, LLC 238      
443-647 2 New Windsor MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-647 3 New Windsor MD   876D ONVOY, LLC - MD 238   2016-04-08   
443-647 4 New Windsor MD   876D ONVOY, LLC - MD 238   2016-04-08   
443-647 5 New Windsor MD   073H TELNYX LLC 238   2017-04-26   
443-647 6 New Windsor MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-647 7 New Windsor MD   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-647 8 New Windsor MD   876D ONVOY, LLC - MD 238   2016-03-17   
443-647 9 New Windsor MD   876D ONVOY, LLC - MD 238   2016-03-17   
443-648 A Essex MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-648 0 Essex MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-12-09   
443-648 1 Essex MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-08-23   
443-648 2 Essex MD   829J PAETEC ITEL, LLC 238   2007-06-15   
443-648 3 Essex MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-648 4 Essex MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-648 5 Essex MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-648 6 Essex MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-04-12   
443-648 7 Essex MD   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-648 8 Essex MD   515J IP HORIZON LLC 238   2013-09-06   
443-648 9 Essex MD   876D ONVOY, LLC - MD 238   2012-10-07   
443-649 A Sparrows Point MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-649 0 Sparrows Point MD   829J PAETEC ITEL, LLC 238      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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