Local Calling Guide

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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
443-439 A Trappe MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-439 0 Trappe MD SLBRMD90DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 242   2018-11-20   
443-439 2 Trappe MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2016-10-16   
443-439 3 Trappe MD SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
443-439 4 Trappe MD SLBRMD90DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 242   2018-03-11   
443-439 5 Trappe MD   2593 CORE COMMUNICATIONS, INC. - MD 242   2018-06-17   
443-439 6 Trappe MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2012-05-04   
443-439 7 Trappe MD   2593 CORE COMMUNICATIONS, INC. - MD 242   2018-06-17   
443-439 8 Trappe MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
443-439 9 Trappe MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2006-06-02   
443-440 A Annapolis MD ANNPMDANDS0  9212 VERIZON MARYLAND, INC. 238      
443-440 0 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-09-10   
443-440 1 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-09-10   
443-440 2 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-09-10   
443-440 3 Annapolis MD BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2010-11-07   
443-440 4 Annapolis MD ANNPMDANDS0  9212 VERIZON MARYLAND, INC. 238      
443-440 5 Annapolis MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
443-440 6 Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238   2010-08-16   
443-440 7 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-09-04   
443-440 8 Annapolis MD BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2011-02-11   
443-440 9 Annapolis MD BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2011-02-11   
443-441 A Glenwood MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-441 0 Glenwood MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-441 1 Glenwood MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-441 2 Glenwood MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2016-10-16   
443-441 3 Glenwood MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-441 4 Glenwood MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-441 5 Glenwood MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2018-01-22   
443-441 6 Glenwood MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-441 7 Glenwood MD   508J CENTURYLINK COMMUNICATIONS LLC 238   2014-06-12   
443-441 8 Glenwood MD BLTMMDCHLMD  082H LOCAL ACCESS LLC - MD 238   2016-05-31   
443-441 9 Glenwood MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-442 A Parkville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-442 0 Parkville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-442 1 Parkville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-442 2 Parkville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-442 3 Parkville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-05-11   
443-442 4 Parkville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2014-07-01   
443-442 5 Parkville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-05-11   
443-442 6 Parkville MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2014-07-18   
443-442 7 Parkville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2015-10-01   
443-442 8 Parkville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-444 A Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
443-444 0 Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238   2005-08-27   
443-444 1 Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238   2005-08-27   
443-444 2 Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238   2005-08-27   
443-444 3 Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238   2005-08-27   
443-444 4 Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238   2005-08-27   
443-444 5 Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238   2005-08-27   
443-444 6 Baltimore MD BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238   2005-08-27   

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Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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