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 |
443-300
| 5 |
Sykesville |
MD |
BLTMMDCHXMX |
506J TWILIO INTERNATIONAL, INC. |
238 |
|
2020-12-26 |
|
443-300
| 6 |
Sykesville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-02-25 |
|
443-300
| 7 |
Sykesville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-09-03 |
|
443-300
| 8 |
Sykesville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-10-28 |
|
443-300
| 9 |
Sykesville |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-07-12 |
|
443-301
| A |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
443-301
| 0 |
Baltimore |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
2013-10-01 |
|
443-301
| 1 |
Baltimore |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
2013-10-01 |
|
443-301
| 2 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-06-07 |
|
443-301
| 3 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-06-07 |
|
443-301
| 4 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-06-07 |
|
443-301
| 5 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-06-07 |
|
443-301
| 6 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-06-07 |
|
443-301
| 7 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-06-07 |
|
443-301
| 8 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-06-07 |
|
443-301
| 9 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-06-07 |
|
443-302
| A |
Crofton |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-302
| 0 |
Crofton |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-302
| 1 |
Crofton |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-302
| 2 |
Crofton |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2008-03-20 |
|
443-302
| 3 |
Crofton |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-05-21 |
|
443-302
| 4 |
Crofton |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-302
| 5 |
Crofton |
MD |
BLTMMDCHXMX |
506J TWILIO INTERNATIONAL, INC. |
238 |
|
2020-12-26 |
|
443-302
| 6 |
Crofton |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2008-10-01 |
|
443-302
| 7 |
Crofton |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2008-02-12 |
|
443-302
| 8 |
Crofton |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-05-21 |
|
443-302
| 9 |
Crofton |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2008-12-11 |
|
443-303
| A |
Aberdeen |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
236 |
|
|
|
443-303
| 0 |
Aberdeen |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
236 |
|
|
|
443-303
| 1 |
Aberdeen |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
236 |
|
|
|
443-303
| 2 |
Aberdeen |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2004-11-22 |
|
443-303
| 3 |
Aberdeen |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
236 |
|
2007-04-15 |
|
443-303
| 4 |
Aberdeen |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
236 |
|
|
|
443-303
| 5 |
Aberdeen |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
443-303
| 6 |
Aberdeen |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2011-10-06 |
|
443-303
| 7 |
Aberdeen |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2010-02-11 |
|
443-303
| 8 |
Aberdeen |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2007-02-19 |
|
443-303
| 9 |
Aberdeen |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2010-06-06 |
|
443-304
| A |
Arbutus |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-304
| 0 |
Arbutus |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-304
| 1 |
Arbutus |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-304
| 2 |
Arbutus |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2005-03-10 |
|
443-304
| 3 |
Arbutus |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
2006-10-14 |
|
443-304
| 4 |
Arbutus |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
443-304
| 5 |
Arbutus |
MD |
BLTQMD013MD |
939H COMMIO, LLC |
238 |
|
2021-06-12 |
|
443-304
| 6 |
Arbutus |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
2006-10-20 |
|
443-304
| 7 |
Arbutus |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-02-25 |
|
443-304
| 8 |
Arbutus |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-10-28 |
|
443-304
| 9 |
Arbutus |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-02-27 |
|
443-305
| A |
Armiger-Gibson Island |
MD |
BLTOMDXIDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
238 |
|
|
|
<< 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 >>
Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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