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 |
443-671
| A |
New Windsor |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-671
| 0 |
New Windsor |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2004-03-29 |
|
443-671
| 1 |
New Windsor |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2006-03-05 |
|
443-671
| 2 |
New Windsor |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-09-02 |
|
443-671
| 3 |
New Windsor |
MD |
BLTMMDCHXMX |
506J TWILIO INTERNATIONAL, INC. |
238 |
|
2020-12-26 |
|
443-671
| 4 |
New Windsor |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-07-31 |
|
443-671
| 5 |
New Windsor |
MD |
BLTMMDCHW29 |
4716 PAETEC COMMUNICATIONS, INC. - MD |
238 |
|
2006-04-07 |
|
443-671
| 6 |
New Windsor |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2007-01-19 |
|
443-671
| 7 |
New Windsor |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-11-18 |
|
443-671
| 8 |
New Windsor |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-07-31 |
|
443-671
| 9 |
New Windsor |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-672
| A |
Parkton |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-672
| 0 |
Parkton |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2004-04-02 |
|
443-672
| 1 |
Parkton |
MD |
CLMAMDJTBMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2004-01-31 |
|
443-672
| 2 |
Parkton |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2006-02-25 |
|
443-672
| 3 |
Parkton |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-03-29 |
|
443-672
| 4 |
Parkton |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2019-02-19 |
|
443-672
| 5 |
Parkton |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2019-02-19 |
|
443-672
| 6 |
Parkton |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-672
| 7 |
Parkton |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-672
| 8 |
Parkton |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2012-10-12 |
|
443-672
| 9 |
Parkton |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-673
| A |
Brooklyn Park-Linthicum |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-673
| 0 |
Brooklyn Park-Linthicum |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-673
| 1 |
Brooklyn Park-Linthicum |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-05-22 |
|
443-673
| 2 |
Brooklyn Park-Linthicum |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2014-02-28 |
|
443-673
| 3 |
Brooklyn Park-Linthicum |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-673
| 4 |
Brooklyn Park-Linthicum |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2014-02-25 |
|
443-673
| 5 |
Brooklyn Park-Linthicum |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-09-23 |
|
443-673
| 6 |
Brooklyn Park-Linthicum |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-673
| 7 |
Brooklyn Park-Linthicum |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2014-04-30 |
|
443-673
| 8 |
Brooklyn Park-Linthicum |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2023-02-23 |
|
443-673
| 9 |
Brooklyn Park-Linthicum |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2020-11-30 |
|
443-674
| A |
North East |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-674
| 0 |
North East |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2006-05-26 |
|
443-674
| 1 |
North East |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2004-02-05 |
|
443-674
| 2 |
North East |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2019-10-18 |
|
443-674
| 3 |
North East |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2019-01-22 |
|
443-674
| 4 |
North East |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-674
| 5 |
North East |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2004-04-02 |
|
443-674
| 6 |
North East |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-04-04 |
|
443-674
| 7 |
North East |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-08-13 |
|
443-674
| 8 |
North East |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2005-07-25 |
|
443-674
| 9 |
North East |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-675
| A |
Randallstown |
MD |
BLARMDBL1MD |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
238 |
|
|
|
443-675
| 0 |
Randallstown |
MD |
BLARMDBL1MD |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
238 |
|
|
|
443-675
| 1 |
Randallstown |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2020-06-11 |
|
443-675
| 2 |
Randallstown |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-09-19 |
|
443-675
| 4 |
Randallstown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-23 |
|
443-675
| 5 |
Randallstown |
MD |
BLTQMD012MD |
964H BARR TELL USA, INC. |
238 |
|
2016-12-17 |
|
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Last updated: Fri, 22 Mar 2024 03:02:44 UTC
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