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 >>
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
443-512
| 2 |
Edgewood |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-09-05 |
|
443-512
| 3 |
Edgewood |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-30 |
|
443-512
| 4 |
Edgewood |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-01-19 |
|
443-512
| 5 |
Edgewood |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-01-19 |
|
443-512
| 6 |
Edgewood |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2018-07-05 |
|
443-512
| 7 |
Edgewood |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2018-10-14 |
|
443-512
| 8 |
Edgewood |
MD |
WNRNMDWNRS1 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-512
| 9 |
Edgewood |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-30 |
|
443-513
| A |
Berlin |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
|
|
443-513
| 0 |
Berlin |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
|
|
443-513
| 1 |
Berlin |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
|
|
443-513
| 2 |
Berlin |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-08-09 |
|
443-513
| 3 |
Berlin |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE, LLC |
242 |
|
2017-07-26 |
|
443-513
| 4 |
Berlin |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE, LLC |
242 |
|
2006-07-31 |
|
443-513
| 5 |
Berlin |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2019-05-02 |
|
443-513
| 6 |
Berlin |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
2006-09-18 |
|
443-513
| 7 |
Berlin |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2019-05-02 |
|
443-513
| 8 |
Berlin |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
2012-02-23 |
|
443-513
| 9 |
Berlin |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2019-05-02 |
|
443-514
| A |
Catonsville |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-514
| 0 |
Catonsville |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-514
| 1 |
Catonsville |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-514
| 2 |
Catonsville |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-514
| 3 |
Catonsville |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2021-05-13 |
|
443-514
| 4 |
Catonsville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2005-02-05 |
|
443-514
| 5 |
Catonsville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2005-02-05 |
|
443-514
| 6 |
Catonsville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2005-02-05 |
|
443-514
| 7 |
Catonsville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2005-02-05 |
|
443-514
| 8 |
Catonsville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2005-03-19 |
|
443-514
| 9 |
Catonsville |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2021-06-06 |
|
443-515
| A |
Cambridge |
MD |
ESTNMDESQMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
|
|
443-515
| 0 |
Cambridge |
MD |
ESTNMDESQMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2009-08-07 |
|
443-515
| 1 |
Cambridge |
MD |
SLBRMDSCXMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
242 |
|
2010-08-21 |
|
443-515
| 2 |
Cambridge |
MD |
SLBRMDSCXMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
242 |
|
2011-08-25 |
|
443-515
| 3 |
Cambridge |
MD |
SLBRMDSCXMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
242 |
|
2011-08-25 |
|
443-515
| 4 |
Cambridge |
MD |
SLBRMDSBX0X |
624H ONVOY SPECTRUM, LLC |
242 |
|
2022-02-03 |
|
443-515
| 5 |
Cambridge |
MD |
SLBRMDSBX6Y |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
242 |
|
2010-06-27 |
|
443-515
| 6 |
Cambridge |
MD |
SLBRMDSBXUX |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
242 |
|
2012-07-13 |
|
443-515
| 7 |
Cambridge |
MD |
SLBRMDSCXMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
242 |
|
2015-04-12 |
|
443-515
| 8 |
Cambridge |
MD |
SLBRMDSCXMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
242 |
|
2015-04-12 |
|
443-515
| 9 |
Cambridge |
MD |
SLBRMDSCXMD |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
242 |
|
2014-11-08 |
|
443-516
| A |
Sykesville |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-516
| 0 |
Sykesville |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-516
| 1 |
Sykesville |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-516
| 2 |
Sykesville |
MD |
BLTMMDCHW29 |
4716 PAETEC COMMUNICATIONS, INC. - MD |
238 |
|
2004-12-22 |
|
443-516
| 3 |
Sykesville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-05-01 |
|
443-516
| 4 |
Sykesville |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-516
| 6 |
Sykesville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2016-09-19 |
|
443-516
| 7 |
Sykesville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-06-02 |
|
443-516
| 8 |
Sykesville |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-28 |
|
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Last updated: Wed, 07 Feb 2024 04:12:25 UTC
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