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
443-383 4 Silver Run MD   876D ONVOY, LLC - MD 238   2016-03-25   
443-383 5 Silver Run MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 6 Silver Run MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 7 Silver Run MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-06-12   
443-383 8 Silver Run MD   073H TELNYX LLC 238   2017-04-26   
443-383 9 Silver Run MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-384 A Parkville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-384 0 Parkville MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-384 1 Parkville MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-384 2 Parkville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2001-11-01   
443-384 3 Parkville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2001-11-01   
443-384 4 Parkville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2001-11-01   
443-384 5 Parkville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2001-11-01   
443-384 6 Parkville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2001-11-01   
443-384 7 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-03-31   
443-384 8 Parkville MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-04-02   
443-384 9 Parkville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-385 A Easton MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC. - MD 242      
443-386 A Baltimore MD CTVLMDBACM3  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 0 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 1 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 2 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 3 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 4 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 5 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 6 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 7 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-386 8 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2003-07-18   
443-386 9 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2003-11-03   
443-387 A Pocomoke MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC. - MD 242      
443-388 A Baltimore MD CTVLMDBACM3  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-06-08   
443-388 0 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-06-08   
443-388 1 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-07-03   
443-388 2 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-07-03   
443-388 3 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-07-03   
443-388 4 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-07-24   
443-388 5 Baltimore MD   4773 XO MARYLAND, LLC 238   2006-07-28   
443-388 6 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-08-07   
443-388 7 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-08-07   
443-388 8 Baltimore MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2006-07-07   
443-388 9 Baltimore MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2006-07-07   
443-389 A Salisbury MD ESTNMDBNGT0  2593 CORE COMMUNICATIONS, INC. - MD 242      
443-390 A Churchville MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-390 0 Churchville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-390 1 Churchville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-390 2 Churchville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-08-21   
443-390 3 Churchville MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2008-02-01   
443-390 4 Churchville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-390 5 Churchville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-390 6 Churchville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-04-04   

<< 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: Wed, 01 Apr 2020 02:09:16 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.