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
443-876 2 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2007-07-09   
443-876 3 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2006-07-27   
443-876 4 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2006-01-13   
443-876 5 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2005-09-29   
443-876 6 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2007-02-23   
443-876 7 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2007-02-23   
443-876 8 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2007-07-09   
443-876 9 Bel Air MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2007-07-09   
443-877 A North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-877 0 North East MD   145J TERRA NOVA TELECOM INC. 238   2021-01-28   
443-877 1 North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-04   
443-877 2 North East MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-10-16   
443-877 3 North East MD BLTMMDCHFMD  5562 METRO PCS, INC. 238   2018-10-19   
443-877 4 North East MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-877 5 North East MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-877 6 North East MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2007-12-30   
443-877 7 North East MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2014-05-02   
443-877 8 North East MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-01-08   
443-877 9 North East MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-878 A Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-878 0 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-02-16   
443-878 1 Columbia MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2005-08-25   
443-878 2 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-09-20   
443-878 3 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-03-04   
443-878 4 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-01   
443-878 5 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-24   
443-878 6 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-24   
443-878 7 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   
443-878 8 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-07-22   
443-878 9 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-24   
443-879 A Dundalk MD DNDLMDDNDS0  9212 VERIZON MARYLAND, INC. 238      
443-879 0 Dundalk MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-04-30   
443-879 1 Dundalk MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2006-01-20   
443-879 2 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
443-879 3 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-16   
443-879 4 Dundalk MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-11-11   
443-879 5 Dundalk MD DNDLMDDNDS0  9212 VERIZON MARYLAND, INC. 238   2003-08-09   
443-879 6 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-07-28   
443-879 7 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-879 8 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-879 9 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-880 A Salisbury MD WYMLMDMWEMD  7421 AT&T LOCAL 242      
443-880 0 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-08-03   
443-880 1 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2006-02-03   
443-880 2 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-08-19   
443-880 3 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-11-03   
443-880 4 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2003-12-19   
443-880 5 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2004-04-01   
443-880 6 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2004-05-02   
443-880 7 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2004-02-17   

<< 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: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.