Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-204 5 Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-01-25   
443-204 6 Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-04-16   
443-204 7 Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2007-01-25   
443-204 8 Pikesville MD OWMLMDOMDS0  9212 VERIZON MARYLAND, INC. 238   2003-11-14   
443-204 9 Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-03-29   
443-205 A Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242      
443-205 0 Cambridge MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2004-06-03   
443-205 1 Cambridge MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2013-09-16   
443-205 2 Cambridge MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2006-08-07   
443-205 3 Cambridge MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2005-07-22   
443-205 4 Cambridge MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2004-07-16   
443-205 5 Cambridge MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2004-03-18   
443-205 6 Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242   2004-03-12   
443-205 7 Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242   2004-03-12   
443-205 8 Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242   2004-11-19   
443-205 9 Cambridge MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2007-05-03   
443-206 A Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-206 0 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-206 1 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-206 2 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-206 3 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-206 4 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-206 5 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-206 6 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-206 7 Perryville MD BLTMMD91DS1  2593 CORE COMMUNICATIONS, INC. - MD 238   2004-04-02   
443-206 8 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-03-04   
443-206 9 Perryville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-207 A Elkton MD BLTMMDCHXOY  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. 238      
443-207 0 Elkton MD BLTMMDCHXOY  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. 238      
443-207 1 Elkton MD BLTMMDCHXOY  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. 238      
443-207 2 Elkton MD BLTMMDCHXOY  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. 238      
443-207 3 Elkton MD BLTMMDCHXOY  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. 238   2011-03-03   
443-207 4 Elkton MD BLTMMDCHXOY  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. 238   2013-12-06   
443-207 5 Elkton MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2012-02-07   
443-207 6 Elkton MD BLTMMDCHXOY  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. 238      
443-207 7 Elkton MD BLTMMDCHXOY  5562 METRO PCS, INC. 238   2014-12-15   
443-207 8 Elkton MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2012-03-09   
443-207 9 Elkton MD BLTMMDCHXOY  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. 238      
443-208 A Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238      
443-208 0 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 1 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 2 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 3 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 4 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 5 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 6 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 7 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 8 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-208 9 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-03-18   
443-209 A Havre de Grace MD BLARMDBL1MD  7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 >>

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.