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 |
443-320
| 7 |
Baltimore |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2012-03-13 |
|
443-320
| 8 |
Baltimore |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2024-01-06 |
|
443-320
| 9 |
Baltimore |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-321
| A |
Annapolis |
MD |
BLTMMDCHW29 |
4716 PAETEC COMMUNICATIONS, INC. - MD |
238 |
|
|
|
443-322
| A |
Towson |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-322
| 0 |
Towson |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-322
| 1 |
Towson |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-322
| 2 |
Towson |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-322
| 3 |
Towson |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2020-06-04 |
|
443-322
| 4 |
Towson |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2005-06-01 |
|
443-322
| 5 |
Towson |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-322
| 6 |
Towson |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2005-06-01 |
|
443-322
| 7 |
Towson |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-322
| 8 |
Towson |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-322
| 9 |
Towson |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-323
| A |
Sharptown |
MD |
SLBRMDSBX6Y |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
242 |
|
|
|
443-323
| 0 |
Sharptown |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-04-30 |
|
443-323
| 1 |
Sharptown |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-07-04 |
|
443-323
| 2 |
Sharptown |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-07-04 |
|
443-323
| 3 |
Sharptown |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE, LLC |
242 |
|
2006-07-31 |
|
443-323
| 4 |
Sharptown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2019-05-02 |
|
443-323
| 5 |
Sharptown |
MD |
|
145J TERRA NOVA TELECOM INC. |
242 |
|
2024-02-15 |
|
443-323
| 6 |
Sharptown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2019-05-02 |
|
443-323
| 7 |
Sharptown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-323
| 8 |
Sharptown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-323
| 9 |
Sharptown |
MD |
SLBRMDSBX6Y |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
242 |
|
|
|
443-324
| A |
Baltimore |
MD |
BLTMMDCH40Z |
6664 SPRINT SPECTRUM, L.P. |
238 |
|
|
|
443-324
| 0 |
Baltimore |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-324
| 1 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
443-324
| 2 |
Baltimore |
MD |
BLTMMDCH40Z |
5562 METROPCS, INC. |
238 |
|
|
|
443-324
| 3 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
443-324
| 4 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
443-324
| 5 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
443-324
| 6 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
443-324
| 7 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
443-324
| 8 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
443-324
| 9 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
|
|
443-325
| A |
Ellicott City |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-325
| 0 |
Ellicott City |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-325
| 1 |
Ellicott City |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-325
| 2 |
Ellicott City |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2013-06-14 |
|
443-325
| 3 |
Ellicott City |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2013-06-14 |
|
443-325
| 4 |
Ellicott City |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2015-02-01 |
|
443-325
| 5 |
Ellicott City |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2014-01-06 |
|
443-325
| 6 |
Ellicott City |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2016-02-04 |
|
443-325
| 7 |
Ellicott City |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-325
| 8 |
Ellicott City |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-325
| 9 |
Ellicott City |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-326
| A |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
443-327
| A |
Aberdeen |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
236 |
|
|
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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