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 |
443-592
| 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 |
|
443-594
| A |
Sparrows Point |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-594
| 0 |
Sparrows Point |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-594
| 1 |
Sparrows Point |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-594
| 2 |
Sparrows Point |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-02-10 |
|
443-594
| 3 |
Sparrows Point |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2008-10-01 |
|
443-594
| 4 |
Sparrows Point |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-594
| 5 |
Sparrows Point |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-594
| 6 |
Sparrows Point |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2012-10-08 |
|
443-594
| 7 |
Sparrows Point |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-24 |
|
443-594
| 8 |
Sparrows Point |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-24 |
|
443-594
| 9 |
Sparrows Point |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-10-14 |
|
443-595
| A |
Sparks-Glencoe |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-595
| 0 |
Sparks-Glencoe |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-595
| 1 |
Sparks-Glencoe |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-595
| 3 |
Sparks-Glencoe |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
2006-07-01 |
|
443-595
| 4 |
Sparks-Glencoe |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2020-09-28 |
|
443-595
| 5 |
Sparks-Glencoe |
MD |
BLTMMDCHXMX |
506J TWILIO INTERNATIONAL, INC. |
238 |
|
2020-12-26 |
|
443-595
| 6 |
Sparks-Glencoe |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-02-18 |
|
443-595
| 7 |
Sparks-Glencoe |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-05-20 |
|
443-595
| 8 |
Sparks-Glencoe |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2012-05-26 |
|
443-595
| 9 |
Sparks-Glencoe |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2012-10-08 |
|
443-596
| A |
Essex |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
|
|
443-596
| 0 |
Essex |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-02-25 |
|
443-596
| 1 |
Essex |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2020-04-06 |
|
443-596
| 2 |
Essex |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-30 |
|
443-596
| 3 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2017-08-16 |
|
443-596
| 4 |
Essex |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-10-20 |
|
443-596
| 5 |
Essex |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-10-20 |
|
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Last updated: Wed, 07 Feb 2024 04:12:25 UTC
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