Local Calling Guide
Area code/prefix search
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 >>
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
443-352
| 8 |
Pikesville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2007-08-13 |
|
443-352
| 9 |
Pikesville |
MD |
BLTMMDCHDMD |
551G NUSO, LLC |
238 |
|
2016-08-31 |
|
443-353
| A |
Cockeysville |
MD |
CYVLMDDADS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-353
| 0 |
Cockeysville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2014-10-26 |
|
443-353
| 1 |
Cockeysville |
MD |
CYVLMDDADS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2004-05-05 |
|
443-353
| 2 |
Cockeysville |
MD |
CYVLMDDADS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2004-05-05 |
|
443-353
| 3 |
Cockeysville |
MD |
CYVLMDDADS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2004-05-05 |
|
443-353
| 4 |
Cockeysville |
MD |
BLTMMDDNDS2 |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
238 |
|
2012-04-26 |
|
443-353
| 5 |
Cockeysville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2015-04-10 |
|
443-353
| 6 |
Cockeysville |
MD |
PIVLMDPKFMD |
9170 BROADVIEW NETWORKS, INC. - MD |
238 |
|
2008-06-09 |
|
443-353
| 7 |
Cockeysville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-06-04 |
|
443-353
| 8 |
Cockeysville |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-01-04 |
|
443-353
| 9 |
Cockeysville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2008-12-11 |
|
443-354
| A |
Glen Burnie |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-354
| 0 |
Glen Burnie |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-06-09 |
|
443-354
| 1 |
Glen Burnie |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2013-06-16 |
|
443-354
| 2 |
Glen Burnie |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-06-09 |
|
443-354
| 3 |
Glen Burnie |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2013-05-30 |
|
443-354
| 4 |
Glen Burnie |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-354
| 5 |
Glen Burnie |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2009-11-05 |
|
443-354
| 6 |
Glen Burnie |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2013-06-14 |
|
443-354
| 7 |
Glen Burnie |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2013-06-14 |
|
443-354
| 8 |
Glen Burnie |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2014-06-06 |
|
443-354
| 9 |
Glen Burnie |
MD |
|
515J IP HORIZON LLC |
238 |
|
2013-09-06 |
|
443-355
| A |
Ellicott City |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-355
| 0 |
Ellicott City |
MD |
BLTMMDCHX7X |
073H TELNYX LLC |
238 |
|
2017-03-14 |
|
443-355
| 1 |
Ellicott City |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-01-19 |
|
443-355
| 2 |
Ellicott City |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-355
| 3 |
Ellicott City |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-01-19 |
|
443-355
| 4 |
Ellicott City |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-355
| 5 |
Ellicott City |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-03-25 |
|
443-355
| 6 |
Ellicott City |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-05-29 |
|
443-355
| 7 |
Ellicott City |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-05-29 |
|
443-355
| 8 |
Ellicott City |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-10-14 |
|
443-355
| 9 |
Ellicott City |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-10-20 |
|
443-356
| A |
Bel Air |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-356
| 0 |
Bel Air |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-06-02 |
|
443-356
| 1 |
Bel Air |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-06-09 |
|
443-356
| 2 |
Bel Air |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-06-09 |
|
443-356
| 3 |
Bel Air |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2010-07-07 |
|
443-356
| 4 |
Bel Air |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-356
| 5 |
Bel Air |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-06-23 |
|
443-356
| 6 |
Bel Air |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-06-26 |
|
443-356
| 7 |
Bel Air |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2010-10-25 |
|
443-356
| 8 |
Bel Air |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-11 |
|
443-356
| 9 |
Bel Air |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-11 |
|
443-357
| A |
Pikesville |
MD |
PIVLMDPKDS1 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-357
| 0 |
Pikesville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-22 |
|
443-357
| 1 |
Pikesville |
MD |
PIVLMDPKDS1 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-357
| 2 |
Pikesville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-22 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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