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 |
443-731
| 3 |
Port Deposit |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2008-11-19 |
|
443-731
| 4 |
Port Deposit |
MD |
BLTOMDKHDS0 |
7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD |
238 |
|
2017-08-03 |
|
443-731
| 5 |
Port Deposit |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2018-06-16 |
|
443-731
| 6 |
Port Deposit |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2008-12-11 |
|
443-731
| 7 |
Port Deposit |
MD |
BLTMMDCHXVX |
321J HD CARRIER LLC |
238 |
|
2016-05-14 |
|
443-731
| 8 |
Port Deposit |
MD |
|
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
2018-07-07 |
|
443-731
| 9 |
Port Deposit |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-732
| A |
Silver Run |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-732
| 0 |
Silver Run |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2008-12-11 |
|
443-732
| 1 |
Silver Run |
MD |
CLMAMDJTDS0 |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2004-02-05 |
|
443-732
| 2 |
Silver Run |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2019-03-08 |
|
443-732
| 3 |
Silver Run |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2012-10-08 |
|
443-732
| 4 |
Silver Run |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
2019-03-29 |
|
443-732
| 5 |
Silver Run |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-06-23 |
|
443-732
| 6 |
Silver Run |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE LLC |
238 |
|
2007-01-19 |
|
443-732
| 7 |
Silver Run |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-732
| 8 |
Silver Run |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-732
| 9 |
Silver Run |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-733
| A |
Waterloo |
MD |
BLTMMDCHDS7 |
7421 AT&T LOCAL |
238 |
|
|
|
443-733
| 0 |
Waterloo |
MD |
BLTMMDSN5MD |
4773 XO MARYLAND, LLC |
238 |
|
2003-02-16 |
|
443-733
| 1 |
Waterloo |
MD |
CLMAMDJTDS0 |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2003-03-04 |
|
443-733
| 2 |
Waterloo |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
2009-03-17 |
|
443-733
| 3 |
Waterloo |
MD |
BLTOMDKHDS0 |
7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD |
238 |
|
2008-10-01 |
|
443-733
| 4 |
Waterloo |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-04-28 |
|
443-733
| 5 |
Waterloo |
MD |
PIVLMDPKQMD |
9170 BROADVIEW NETWORKS, INC. - MD |
238 |
|
2013-10-10 |
|
443-733
| 6 |
Waterloo |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-04-28 |
|
443-733
| 7 |
Waterloo |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
2019-05-02 |
|
443-733
| 8 |
Waterloo |
MD |
BLTMMDCHLMD |
082H LOCAL ACCESS LLC - MD |
238 |
|
2016-05-31 |
|
443-733
| 9 |
Waterloo |
MD |
BLTMMDCHDS7 |
7421 AT&T LOCAL |
238 |
|
|
|
443-734
| A |
Severn |
MD |
ODTNMDONDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-734
| 0 |
Severn |
MD |
BLTQMD010MD |
082H LOCAL ACCESS LLC - MD |
238 |
|
2013-09-06 |
|
443-734
| 1 |
Severn |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-09-06 |
|
443-734
| 2 |
Severn |
MD |
BLTMMDCHFMD |
5562 METRO PCS, INC. |
238 |
|
2015-03-06 |
|
443-734
| 3 |
Severn |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-01-22 |
|
443-734
| 4 |
Severn |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2018-04-02 |
|
443-734
| 5 |
Severn |
MD |
BLTMMDCHFMD |
5562 METRO PCS, INC. |
238 |
|
2015-03-13 |
|
443-734
| 6 |
Severn |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2018-11-11 |
|
443-734
| 7 |
Severn |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-05-29 |
|
443-734
| 8 |
Severn |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-05-29 |
|
443-734
| 9 |
Severn |
MD |
ODTNMDONDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-735
| A |
Salisbury |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
|
|
443-736
| A |
Salisbury |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
|
|
443-736
| 0 |
Salisbury |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
|
|
443-736
| 1 |
Salisbury |
MD |
SLBRMDSBXFX |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
242 |
|
2013-07-21 |
|
443-736
| 2 |
Salisbury |
MD |
SLBRMDSBXFX |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
242 |
|
2011-04-16 |
|
443-736
| 3 |
Salisbury |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE LLC |
242 |
|
2008-03-26 |
|
443-736
| 4 |
Salisbury |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE LLC |
242 |
|
2008-03-26 |
|
443-736
| 5 |
Salisbury |
MD |
SLBRMDSBRMD |
6664 SPRINT SPECTRUM L.P. |
242 |
|
2011-10-11 |
|
443-736
| 6 |
Salisbury |
MD |
ESTNMDESQMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2010-05-03 |
|
443-736
| 7 |
Salisbury |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE LLC |
242 |
|
2007-10-29 |
|
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Last updated: Sun, 28 Feb 2021 19:06:05 UTC
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