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 |
443-963
| 9 |
Baltimore |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2012-07-15 |
|
443-964
| A |
North Beach |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
|
|
443-964
| 0 |
North Beach |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-964
| 1 |
North Beach |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-10-17 |
|
443-964
| 2 |
North Beach |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
2006-07-31 |
|
443-964
| 3 |
North Beach |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2010-02-01 |
|
443-964
| 4 |
North Beach |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2008-03-07 |
|
443-964
| 5 |
North Beach |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2011-06-28 |
|
443-964
| 6 |
North Beach |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2012-07-08 |
|
443-964
| 7 |
North Beach |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-964
| 8 |
North Beach |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2007-01-22 |
|
443-964
| 9 |
North Beach |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-01-02 |
|
443-965
| A |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2024-02-09 |
|
443-965
| 0 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-20 |
|
443-965
| 1 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-20 |
|
443-965
| 2 |
Baltimore |
MD |
BLTMMDCHDS2 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2006-08-31 |
|
443-965
| 3 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-20 |
|
443-965
| 4 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-20 |
|
443-965
| 5 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-20 |
|
443-965
| 6 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2023-10-20 |
|
443-965
| 8 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2006-08-23 |
|
443-965
| 9 |
Baltimore |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2010-08-09 |
|
443-966
| A |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-966
| 0 |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2006-11-06 |
|
443-966
| 1 |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-02-16 |
|
443-966
| 2 |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-08-01 |
|
443-966
| 3 |
Fallston |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-01-09 |
|
443-966
| 4 |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2011-02-03 |
|
443-966
| 5 |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2012-07-02 |
|
443-966
| 6 |
Fallston |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-03-04 |
|
443-966
| 7 |
Fallston |
MD |
BLTMMDCHXMX |
506J TWILIO INTERNATIONAL, INC. |
238 |
|
2020-12-26 |
|
443-966
| 8 |
Fallston |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-966
| 9 |
Fallston |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-967
| A |
North East |
MD |
NRTEMDNERS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-967
| 0 |
North East |
MD |
NRTEMDNERS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-967
| 1 |
North East |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-967
| 2 |
North East |
MD |
BLTMMDCH3MD |
228C IDT AMERICA, CORP. - MD |
238 |
|
2012-01-08 |
|
443-967
| 3 |
North East |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2013-05-23 |
|
443-967
| 4 |
North East |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2016-08-22 |
|
443-967
| 5 |
North East |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-21 |
|
443-967
| 6 |
North East |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-21 |
|
443-967
| 7 |
North East |
MD |
BLTMMDCHX7X |
073H TELNYX LLC |
238 |
|
2017-04-26 |
|
443-967
| 8 |
North East |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-967
| 9 |
North East |
MD |
BLTMMDCHFMD |
5562 METROPCS, INC. |
238 |
|
2018-12-31 |
|
443-968
| A |
Prince Frederick |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
443-968
| 0 |
Prince Frederick |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
443-968
| 1 |
Prince Frederick |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2003-01-24 |
|
443-968
| 2 |
Prince Frederick |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2008-04-08 |
|
443-968
| 3 |
Prince Frederick |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
2006-07-30 |
|
443-968
| 4 |
Prince Frederick |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2008-06-23 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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