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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-348 8 Woodlawn MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
443-348 9 Woodlawn MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-10-23   
443-349 A Silver Run MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238      
443-350 A Elkton MD NRTEMDAICM1  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 0 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 1 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 2 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 3 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 4 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 5 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 6 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 7 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-350 8 Elkton MD   6664 SPRINT SPECTRUM L.P. 238   2005-05-08   
443-350 9 Elkton MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2005-07-25   
443-351 A Odenton MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-351 0 Odenton MD   2589 US LEC OF MARYLAND, INC. 238      
443-351 1 Odenton MD   2589 US LEC OF MARYLAND, INC. 238      
443-351 2 Odenton MD   2589 US LEC OF MARYLAND, INC. 238      
443-351 3 Odenton MD   2589 US LEC OF MARYLAND, INC. 238      
443-351 4 Odenton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-09-03   
443-351 5 Odenton MD   5562 METRO PCS, INC. 238   2017-01-19   
443-351 6 Odenton MD   5562 METRO PCS, INC. 238   2020-03-01   
443-351 7 Odenton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-351 8 Odenton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-27   
443-351 9 Odenton MD   2589 US LEC OF MARYLAND, INC. 238      
443-352 A Pikesville MD BLTMMDCHDS7  7421 AT&T LOCAL 238      
443-352 0 Pikesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-09-11   
443-352 1 Pikesville MD   551G BRIGHTLINK COMMUNICATIONS, LLC 238   2016-08-31   
443-352 2 Pikesville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-352 3 Pikesville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2007-08-13   
443-352 4 Pikesville MD   9212 VERIZON MARYLAND, INC. 238   2003-10-30   
443-352 5 Pikesville MD   9212 VERIZON MARYLAND, INC. 238   2003-10-30   
443-352 6 Pikesville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-352 7 Pikesville MD   7421 AT&T LOCAL 238      
443-352 8 Pikesville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2007-08-13   
443-352 9 Pikesville MD   551G BRIGHTLINK COMMUNICATIONS, LLC 238   2016-08-31   
443-353 A Cockeysville MD CYVLMDDADS0  9212 VERIZON MARYLAND, INC. 238   2004-05-05   
443-353 0 Cockeysville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-10-26   
443-353 1 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238   2004-05-05   
443-353 2 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238   2004-05-05   
443-353 3 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238   2004-05-05   
443-353 4 Cockeysville MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2012-04-26   
443-353 5 Cockeysville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2015-04-10   
443-353 6 Cockeysville MD   9170 BROADVIEW NETWORKS, INC. - MD 238   2008-06-09   
443-353 7 Cockeysville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-04   
443-353 8 Cockeysville MD   082H LOCAL ACCESS LLC - MD 238   2016-01-04   
443-353 9 Cockeysville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-354 A Glen Burnie MD BLTMMDSNRS0  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-354 0 Glen Burnie MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-09   
443-354 1 Glen Burnie MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2013-06-16   

<< 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 >>

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.