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
443-433 1 Annapolis MD   829J PAETEC ITEL, LLC 238   2005-10-07   
443-433 2 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-03-02   
443-433 3 Annapolis MD   829J PAETEC ITEL, LLC 238   2005-04-18   
443-433 4 Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-433 5 Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-433 6 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-03-02   
443-433 7 Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-433 8 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-03-02   
443-433 9 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-08-19   
443-434 A Federalsburg MD SLBRMDSBWMD  073H TELNYX LLC 242      
443-434 0 Federalsburg MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
443-434 1 Federalsburg MD SLBRMDSBWMD  073H TELNYX LLC 242   2017-09-13   
443-434 2 Federalsburg MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-434 3 Federalsburg MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2006-07-31   
443-434 4 Federalsburg MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-13   
443-434 5 Federalsburg MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2015-09-21   
443-434 6 Federalsburg MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2012-07-13   
443-434 7 Federalsburg MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-434 8 Federalsburg MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-434 9 Federalsburg MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
443-435 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2024-02-09   
443-435 0 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-435 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-435 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-435 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-435 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-435 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-435 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-435 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-435 8 Baltimore MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-03-18   
443-435 9 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-436 A Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 0 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 1 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 2 Woodlawn MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-05   
443-436 3 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 4 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 5 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 6 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 7 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 8 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 9 Woodlawn MD WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-437 A Pocomoke MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242      
443-437 0 Pocomoke MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
443-437 1 Pocomoke MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
443-437 2 Pocomoke MD   145J TERRA NOVA TELECOM INC. 242   2021-12-09   
443-437 3 Pocomoke MD ESTNMDES5MD  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2012-03-01   
443-437 4 Pocomoke MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
443-437 5 Pocomoke MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2018-05-14   
443-437 6 Pocomoke MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2012-05-01   
443-437 7 Pocomoke MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2006-07-31   
443-437 8 Pocomoke MD SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
443-437 9 Pocomoke MD SLBRMDSC9MD  281E YMAX COMMUNICATIONS CORP. - MD 242   2011-04-03   
443-438 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-438 0 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-12-14   
443-438 1 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-01-11   
443-438 2 Baltimore MD   829J PAETEC ITEL, LLC 238   2009-09-17   
443-438 3 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 4 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 5 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 6 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 7 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
443-438 8 Baltimore MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-09-24   
443-438 9 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2009-03-02   
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 1 Trappe MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2023-12-22   
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 6 Trappe MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2012-05-04   
443-439 7 Trappe MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2025-03-21   
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 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 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 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-440 5 Annapolis MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
443-440 6 Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES 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 BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-441 5 Glenwood MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2018-01-22   
443-441 6 Glenwood MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-04-21   
443-441 7 Glenwood MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-441 8 Glenwood MD   515J IP HORIZON LLC 238   2016-05-31   
443-441 9 Glenwood MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-442 A Parkville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-442 0 Parkville MD   829J PAETEC ITEL, LLC 238      
443-442 1 Parkville MD   829J PAETEC ITEL, LLC 238      
443-442 2 Parkville MD   829J PAETEC ITEL, LLC 238      

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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