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
443-643 4 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      
443-643 5 Bel Air MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-04-08   
443-643 6 Bel Air MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-04-08   
443-643 7 Bel Air MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-04-08   
443-643 8 Bel Air MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-04-08   
443-643 9 Bel Air MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-644 A Jarrettsville MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-644 0 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-10-22   
443-644 1 Jarrettsville MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-644 2 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-10-22   
443-644 3 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-644 4 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-644 5 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-644 6 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-10-22   
443-644 7 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-10-22   
443-644 8 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-10-22   
443-644 9 Jarrettsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-10-22   
443-645 A Millersville MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-645 1 Millersville MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-645 2 Millersville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-645 3 Millersville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2015-04-17   
443-645 4 Millersville MD   876D ONVOY, LLC - MD 238   2016-03-24   
443-645 5 Millersville MD   876D ONVOY, LLC - MD 238   2016-03-24   
443-645 6 Millersville MD   876D ONVOY, LLC - MD 238   2016-10-20   
443-645 7 Millersville MD   964H BARR TELL USA, INC. 238   2016-12-17   
443-645 8 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-05-31   
443-645 9 Millersville MD   073H TELNYX LLC 238   2017-04-26   
443-646 A North Beach MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-646 1 North Beach MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-646 2 North Beach MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2016-12-02   
443-646 3 North Beach MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-04   
443-646 4 North Beach MD   876D ONVOY, LLC - MD 238   2016-03-23   
443-646 5 North Beach MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2014-05-01   
443-646 6 North Beach MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2015-08-05   
443-646 7 North Beach MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-06-12   
443-646 8 North Beach MD   876D ONVOY, LLC - MD 238   2016-03-23   
443-646 9 North Beach MD   073H TELNYX LLC 238   2017-04-26   
443-647 A New Windsor MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-647 0 New Windsor MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-647 1 New Windsor MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-647 2 New Windsor MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-647 3 New Windsor MD   876D ONVOY, LLC - MD 238   2016-04-08   
443-647 4 New Windsor MD   876D ONVOY, LLC - MD 238   2016-04-08   
443-647 5 New Windsor MD   073H TELNYX LLC 238   2017-04-26   
443-647 6 New Windsor MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-647 7 New Windsor MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-06-12   
443-647 8 New Windsor MD   876D ONVOY, LLC - MD 238   2016-03-17   
443-647 9 New Windsor MD   876D ONVOY, LLC - MD 238   2016-03-17   
443-648 A Essex MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-648 0 Essex MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-12-09   

<< 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: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.