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 |
443-689
| 9 |
Cockeysville |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-05-22 |
|
443-690
| A |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-691
| A |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
443-692
| A |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-692
| 0 |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-692
| 1 |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-692
| 2 |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-692
| 3 |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-692
| 4 |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-692
| 5 |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-692
| 6 |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-692
| 7 |
Baltimore |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-06-26 |
|
443-692
| 8 |
Baltimore |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2010-08-23 |
|
443-692
| 9 |
Baltimore |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-693
| A |
Perryville |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-693
| 0 |
Perryville |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2008-11-19 |
|
443-693
| 1 |
Perryville |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2004-02-05 |
|
443-693
| 2 |
Perryville |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2005-09-01 |
|
443-693
| 3 |
Perryville |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2005-05-02 |
|
443-693
| 4 |
Perryville |
MD |
BLARMDBL1MD |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
238 |
|
2008-05-05 |
|
443-693
| 5 |
Perryville |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2006-03-05 |
|
443-693
| 6 |
Perryville |
MD |
BLTMMDCHXMX |
506J TWILIO INTERNATIONAL, INC. |
238 |
|
2020-12-26 |
|
443-693
| 7 |
Perryville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2008-12-11 |
|
443-693
| 8 |
Perryville |
MD |
BLTMMDCHW29 |
4716 PAETEC COMMUNICATIONS, INC. - MD |
238 |
|
2006-04-07 |
|
443-693
| 9 |
Perryville |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-694
| A |
Severna Park |
MD |
BLTMMDCH40Z |
6664 SPRINT SPECTRUM, L.P. |
238 |
|
|
|
443-694
| 0 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
2005-03-08 |
|
443-694
| 1 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-694
| 2 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
2005-01-18 |
|
443-694
| 3 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-694
| 4 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-694
| 5 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-694
| 6 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-694
| 7 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-694
| 8 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
2006-04-03 |
|
443-694
| 9 |
Severna Park |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-695
| A |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-696
| A |
Dundalk |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-696
| 0 |
Dundalk |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-696
| 1 |
Dundalk |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-11-25 |
|
443-696
| 3 |
Dundalk |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-696
| 4 |
Dundalk |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2008-10-01 |
|
443-696
| 5 |
Dundalk |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-11-25 |
|
443-696
| 6 |
Dundalk |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-10-22 |
|
443-696
| 7 |
Dundalk |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-696
| 8 |
Dundalk |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-09-23 |
|
443-696
| 9 |
Dundalk |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-697
| A |
Catonsville |
MD |
BLTMMDDN4MD |
2554 GLOBAL NAPS SOUTH, INC. - MD |
238 |
|
|
|
443-698
| A |
Odenton |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-698
| 0 |
Odenton |
MD |
BLTQMD012MD |
964H BARR TELL USA, INC. |
238 |
|
2016-12-17 |
|
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Last updated: Sat, 01 Jun 2024 11:59:14 UTC
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