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 |
443-589
| 3 |
Cockeysville |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-589
| 4 |
Cockeysville |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2013-06-14 |
|
443-589
| 5 |
Cockeysville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2018-10-19 |
|
443-589
| 7 |
Cockeysville |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-14 |
|
443-589
| 8 |
Cockeysville |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-14 |
|
443-589
| 9 |
Cockeysville |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-590
| A |
Reisterstown |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-590
| 0 |
Reisterstown |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-590
| 1 |
Reisterstown |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-590
| 2 |
Reisterstown |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-09-10 |
|
443-590
| 3 |
Reisterstown |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2006-01-02 |
|
443-590
| 4 |
Reisterstown |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-590
| 5 |
Reisterstown |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2008-10-01 |
|
443-590
| 6 |
Reisterstown |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2016-12-14 |
|
443-590
| 7 |
Reisterstown |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-21 |
|
443-590
| 8 |
Reisterstown |
MD |
BLTQMD012MD |
964H BARR TELL USA, INC. |
238 |
|
2016-12-17 |
|
443-590
| 9 |
Reisterstown |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-21 |
|
443-591
| A |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-591
| 0 |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2009-07-06 |
|
443-591
| 1 |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2009-09-03 |
|
443-591
| 2 |
Glen Burnie |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2010-01-13 |
|
443-591
| 3 |
Glen Burnie |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2010-01-13 |
|
443-591
| 4 |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-02-16 |
|
443-591
| 5 |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-03-16 |
|
443-591
| 6 |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-06-03 |
|
443-591
| 7 |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-06-14 |
|
443-591
| 8 |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-06-14 |
|
443-591
| 9 |
Glen Burnie |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-06-14 |
|
443-592
| A |
Elkridge |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
|
|
443-592
| 0 |
Elkridge |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2022-03-18 |
|
443-592
| 1 |
Elkridge |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2022-01-16 |
|
443-592
| 2 |
Elkridge |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2022-03-18 |
|
443-592
| 3 |
Elkridge |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2017-04-18 |
|
443-592
| 4 |
Elkridge |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2022-01-16 |
|
443-592
| 5 |
Elkridge |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-592
| 6 |
Elkridge |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-592
| 7 |
Elkridge |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-592
| 8 |
Elkridge |
MD |
|
515J IP HORIZON LLC |
238 |
|
2019-04-26 |
|
443-592
| 9 |
Elkridge |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2021-01-27 |
|
443-593
| A |
Elkton |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-593
| 0 |
Elkton |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-01-04 |
|
443-593
| 1 |
Elkton |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-593
| 2 |
Elkton |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2016-03-01 |
|
443-593
| 3 |
Elkton |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2014-09-21 |
|
443-593
| 4 |
Elkton |
MD |
BLTMMDCH06T |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-05-23 |
|
443-593
| 5 |
Elkton |
MD |
BLTMMDCH06T |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-05-23 |
|
443-593
| 6 |
Elkton |
MD |
|
515J IP HORIZON LLC |
238 |
|
2015-03-23 |
|
443-593
| 7 |
Elkton |
MD |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-12 |
|
443-593
| 8 |
Elkton |
MD |
BLTMMDCHXOY |
6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP |
238 |
|
2014-02-09 |
|
443-593
| 9 |
Elkton |
MD |
BLTMMDCHXOY |
6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP |
238 |
|
2014-02-09 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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