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 |
443-556
| A |
Cockeysville |
MD |
CYVLMDDADS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-557
| A |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-557
| 0 |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-557
| 1 |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-557
| 2 |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-557
| 3 |
Glen Burnie |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-02-29 |
|
443-557
| 4 |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-557
| 5 |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-557
| 6 |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-557
| 7 |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-557
| 8 |
Glen Burnie |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-06-16 |
|
443-557
| 9 |
Glen Burnie |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
|
|
443-558
| A |
Aberdeen |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
443-558
| 0 |
Aberdeen |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
443-558
| 1 |
Aberdeen |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2013-05-04 |
|
443-558
| 2 |
Aberdeen |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
236 |
|
2013-08-07 |
|
443-558
| 3 |
Aberdeen |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
443-558
| 4 |
Aberdeen |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
236 |
|
2010-03-01 |
|
443-558
| 5 |
Aberdeen |
MD |
ABRDMDABDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2010-05-10 |
|
443-558
| 6 |
Aberdeen |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2010-12-02 |
|
443-558
| 7 |
Aberdeen |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
443-558
| 8 |
Aberdeen |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2010-12-02 |
|
443-558
| 9 |
Aberdeen |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2013-05-04 |
|
443-559
| A |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
|
|
443-559
| 0 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
|
|
443-559
| 1 |
Essex |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2008-02-04 |
|
443-559
| 2 |
Essex |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-03-02 |
|
443-559
| 3 |
Essex |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-30 |
|
443-559
| 4 |
Essex |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-04-29 |
|
443-559
| 5 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2007-10-29 |
|
443-559
| 6 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2007-10-29 |
|
443-559
| 7 |
Essex |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2008-06-16 |
|
443-559
| 8 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2008-06-16 |
|
443-559
| 9 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2008-06-16 |
|
443-560
| A |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2024-02-09 |
|
443-560
| 0 |
Baltimore |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-02-24 |
|
443-560
| 1 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-560
| 2 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-560
| 3 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-560
| 4 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-560
| 5 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-560
| 6 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-560
| 7 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-560
| 8 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-560
| 9 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-09-01 |
|
443-561
| A |
Elkridge |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-561
| 0 |
Elkridge |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-561
| 1 |
Elkridge |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-561
| 2 |
Elkridge |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-561
| 3 |
Elkridge |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
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Last updated: Wed, 07 Feb 2024 04:12:25 UTC
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