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 |
443-337
| 1 |
Sparrows Point |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2019-10-13 |
|
443-337
| 2 |
Sparrows Point |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-03-29 |
|
443-337
| 3 |
Sparrows Point |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2017-10-01 |
|
443-337
| 4 |
Sparrows Point |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2018-01-06 |
|
443-337
| 5 |
Sparrows Point |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-337
| 6 |
Sparrows Point |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-337
| 7 |
Sparrows Point |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-337
| 8 |
Sparrows Point |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-03-29 |
|
443-337
| 9 |
Sparrows Point |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-07-31 |
|
443-338
| A |
Sparks-Glencoe |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-338
| 0 |
Sparks-Glencoe |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2019-06-07 |
|
443-338
| 1 |
Sparks-Glencoe |
MD |
|
515J IP HORIZON LLC |
238 |
|
2015-03-21 |
|
443-338
| 2 |
Sparks-Glencoe |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-338
| 3 |
Sparks-Glencoe |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-07-06 |
|
443-338
| 4 |
Sparks-Glencoe |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2015-08-06 |
|
443-338
| 5 |
Sparks-Glencoe |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-05-31 |
|
443-338
| 6 |
Sparks-Glencoe |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2017-02-27 |
|
443-338
| 7 |
Sparks-Glencoe |
MD |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-25 |
|
443-338
| 8 |
Sparks-Glencoe |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-26 |
|
443-338
| 9 |
Sparks-Glencoe |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-26 |
|
443-339
| A |
Sherwood Forest |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-339
| 0 |
Sherwood Forest |
MD |
BLTMMDCHX7X |
073H TELNYX LLC |
238 |
|
2017-04-26 |
|
443-339
| 1 |
Sherwood Forest |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-339
| 2 |
Sherwood Forest |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2020-11-14 |
|
443-339
| 3 |
Sherwood Forest |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-05-22 |
|
443-339
| 4 |
Sherwood Forest |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-05-22 |
|
443-339
| 5 |
Sherwood Forest |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-18 |
|
443-339
| 6 |
Sherwood Forest |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-18 |
|
443-339
| 7 |
Sherwood Forest |
MD |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-12 |
|
443-339
| 8 |
Sherwood Forest |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-09-27 |
|
443-339
| 9 |
Sherwood Forest |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-09-27 |
|
443-340
| A |
Westminster |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-341
| A |
Catonsville |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-341
| 0 |
Catonsville |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-341
| 1 |
Catonsville |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-341
| 2 |
Catonsville |
MD |
BLTMMDCH08Z |
4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD |
238 |
|
2004-02-14 |
|
443-341
| 3 |
Catonsville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2004-03-29 |
|
443-341
| 4 |
Catonsville |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2003-02-20 |
|
443-341
| 5 |
Catonsville |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2004-12-27 |
|
443-341
| 6 |
Catonsville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2005-03-10 |
|
443-341
| 7 |
Catonsville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2005-03-19 |
|
443-341
| 8 |
Catonsville |
MD |
BLTMMDCHAMD |
1958 ATX TELECOMMUNICATIONS SERVICES, LTD. |
238 |
|
2004-03-27 |
|
443-341
| 9 |
Catonsville |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-342
| A |
Solomons |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-342
| 0 |
Solomons |
MD |
BLTMMDCHXMX |
506J TWILIO INTERNATIONAL, INC. |
238 |
|
2020-12-26 |
|
443-342
| 1 |
Solomons |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-342
| 2 |
Solomons |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-04-04 |
|
443-342
| 3 |
Solomons |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-09-13 |
|
443-342
| 4 |
Solomons |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-01-04 |
|
443-342
| 5 |
Solomons |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-02-13 |
|
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Last updated: Wed, 07 Feb 2024 04:12:25 UTC
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