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 |
443-444
| 7 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-444
| 8 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-444
| 9 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-445
| A |
Elkridge |
MD |
EKRGMDELDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-445
| 0 |
Elkridge |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-02-25 |
|
443-445
| 1 |
Elkridge |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2015-04-17 |
|
443-445
| 2 |
Elkridge |
MD |
BLTMMDSN6MD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
238 |
|
2006-06-26 |
|
443-445
| 3 |
Elkridge |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE LLC |
238 |
|
2005-03-10 |
|
443-445
| 4 |
Elkridge |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
2005-02-15 |
|
443-445
| 5 |
Elkridge |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
2005-02-15 |
|
443-445
| 6 |
Elkridge |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
2005-02-15 |
|
443-445
| 7 |
Elkridge |
MD |
EKRGMDELDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2004-02-16 |
|
443-445
| 8 |
Elkridge |
MD |
EKRGMDELDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2004-02-16 |
|
443-445
| 9 |
Elkridge |
MD |
BLTMMDSN5MD |
4773 XO MARYLAND, LLC |
238 |
|
2001-11-19 |
|
443-446
| A |
Queenstown |
MD |
ESTNMDES5MD |
7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD |
242 |
|
|
|
443-446
| 1 |
Queenstown |
MD |
SLBRMD90DS0 |
2593 CORE COMMUNICATIONS, INC. - MD |
242 |
|
2019-05-03 |
|
443-446
| 2 |
Queenstown |
MD |
ESTNMDBNGT0 |
2593 CORE COMMUNICATIONS, INC. - MD |
242 |
|
2019-03-29 |
|
443-446
| 3 |
Queenstown |
MD |
|
876D ONVOY, LLC - MD |
242 |
|
2021-03-05 |
|
443-446
| 4 |
Queenstown |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2018-09-13 |
|
443-446
| 5 |
Queenstown |
MD |
|
876D ONVOY, LLC - MD |
242 |
|
2021-03-05 |
|
443-446
| 6 |
Queenstown |
MD |
ESTNMDBNGT0 |
2593 CORE COMMUNICATIONS, INC. - MD |
242 |
|
2019-03-29 |
|
443-446
| 7 |
Queenstown |
MD |
ESTNMDBNGT0 |
2593 CORE COMMUNICATIONS, INC. - MD |
242 |
|
2019-03-29 |
|
443-446
| 8 |
Queenstown |
MD |
SLBRMD90DS0 |
2593 CORE COMMUNICATIONS, INC. - MD |
242 |
|
2019-05-03 |
|
443-446
| 9 |
Queenstown |
MD |
|
2593 CORE COMMUNICATIONS, INC. - MD |
242 |
|
2019-05-03 |
|
443-447
| A |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
443-447
| 0 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-03-31 |
|
443-447
| 1 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-447
| 2 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-447
| 3 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-447
| 4 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-447
| 5 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-447
| 6 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-447
| 7 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-447
| 8 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-447
| 9 |
Baltimore |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2009-04-01 |
|
443-448
| A |
Denton |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE LLC |
242 |
|
|
|
443-448
| 1 |
Denton |
MD |
|
876D ONVOY, LLC - MD |
242 |
|
2021-03-05 |
|
443-448
| 2 |
Denton |
MD |
WYMLMDMWEMD |
7421 AT&T LOCAL |
242 |
|
2005-05-02 |
|
443-448
| 3 |
Denton |
MD |
ESTNMDES5MD |
7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD |
242 |
|
2015-11-02 |
|
443-448
| 4 |
Denton |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE LLC |
242 |
|
2006-07-31 |
|
443-448
| 5 |
Denton |
MD |
SLBRMDSBXFX |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
242 |
|
2016-10-16 |
|
443-448
| 6 |
Denton |
MD |
SLBRMDSBXUX |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
242 |
|
2014-06-25 |
|
443-448
| 7 |
Denton |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE LLC |
242 |
|
2015-03-20 |
|
443-448
| 8 |
Denton |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2017-04-13 |
|
443-448
| 9 |
Denton |
MD |
SLBRMD902MD |
073H TELNYX LLC |
242 |
|
2017-09-13 |
|
443-449
| A |
Baltimore |
MD |
PIVLMDPKFMD |
9170 BROADVIEW NETWORKS, INC. - MD |
238 |
|
|
|
443-449
| 0 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-07-22 |
|
443-449
| 1 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2007-07-22 |
|
443-449
| 2 |
Baltimore |
MD |
PIVLMDPKFMD |
9170 BROADVIEW NETWORKS, INC. - MD |
238 |
|
2007-05-19 |
|
443-449
| 3 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2008-04-08 |
|
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Last updated: Sun, 28 Feb 2021 19:06:05 UTC
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