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 >>
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
443-681
| 9 |
Baltimore |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-06-26 |
|
443-682
| A |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-682
| 0 |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2007-02-05 |
|
443-682
| 1 |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2007-04-02 |
|
443-682
| 2 |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2007-04-02 |
|
443-682
| 3 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-05-12 |
|
443-682
| 4 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-05-12 |
|
443-682
| 5 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-05-12 |
|
443-682
| 6 |
Baltimore |
MD |
BLTMMDCHDS2 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2007-06-02 |
|
443-682
| 7 |
Baltimore |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE LLC |
238 |
|
2007-09-20 |
|
443-682
| 8 |
Baltimore |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE LLC |
238 |
|
2007-09-20 |
|
443-682
| 9 |
Baltimore |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE LLC |
238 |
|
2007-09-20 |
|
443-683
| A |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-683
| 0 |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2007-06-07 |
|
443-683
| 1 |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2007-09-01 |
|
443-683
| 2 |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2007-09-01 |
|
443-683
| 3 |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2007-09-01 |
|
443-683
| 4 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-09-09 |
|
443-683
| 5 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-09-09 |
|
443-683
| 6 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-09-09 |
|
443-683
| 7 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-09-09 |
|
443-683
| 8 |
Baltimore |
MD |
CLMAMDJTDS0 |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2007-11-10 |
|
443-683
| 9 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2008-04-08 |
|
443-684
| A |
Prince Frederick |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-684
| 0 |
Prince Frederick |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2008-12-14 |
|
443-684
| 1 |
Prince Frederick |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-01-16 |
|
443-684
| 2 |
Prince Frederick |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-02-22 |
|
443-684
| 3 |
Prince Frederick |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2010-04-02 |
|
443-684
| 4 |
Prince Frederick |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2009-02-02 |
|
443-684
| 5 |
Prince Frederick |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-07-02 |
|
443-684
| 6 |
Prince Frederick |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2011-06-27 |
|
443-684
| 7 |
Prince Frederick |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-09-04 |
|
443-684
| 8 |
Prince Frederick |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2009-08-01 |
|
443-684
| 9 |
Prince Frederick |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2011-02-03 |
|
443-685
| A |
Severn |
MD |
BLARMDBL1MD |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
238 |
|
|
|
443-685
| 0 |
Severn |
MD |
BLARMDBL1MD |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
238 |
|
|
|
443-685
| 1 |
Severn |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2020-10-26 |
|
443-685
| 2 |
Severn |
MD |
BLTMMDCHXMX |
506J TWILIO INTERNATIONAL INC |
238 |
|
2020-12-26 |
|
443-685
| 3 |
Severn |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE LLC |
238 |
|
2014-05-19 |
|
443-685
| 4 |
Severn |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2011-11-17 |
|
443-685
| 5 |
Severn |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2011-11-17 |
|
443-685
| 6 |
Severn |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-04-22 |
|
443-685
| 7 |
Severn |
MD |
BLTMMDCHLMD |
082H LOCAL ACCESS LLC - MD |
238 |
|
2016-10-14 |
|
443-685
| 8 |
Severn |
MD |
BLTMMDCHFMD |
5562 METRO PCS, INC. |
238 |
|
2016-12-22 |
|
443-685
| 9 |
Severn |
MD |
BLARMDBL1MD |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
238 |
|
|
|
443-686
| A |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-686
| 0 |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2006-11-02 |
|
443-686
| 1 |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2006-11-02 |
|
443-686
| 2 |
Fallston |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2007-09-21 |
|
443-686
| 3 |
Fallston |
MD |
BLTMMDCH47Z |
420C ARMSTRONG TELECOMMUNICATIONS, INC. - MD |
238 |
|
2008-09-08 |
|
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Last updated: Sun, 28 Feb 2021 19:06:05 UTC
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