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 |
443-259
| 5 |
Columbia |
MD |
CLMAMDJTDSA |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2013-09-05 |
|
443-259
| 6 |
Columbia |
MD |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 7 |
Columbia |
MD |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 8 |
Columbia |
MD |
CLMAMDOBDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-259
| 9 |
Columbia |
MD |
BLTMMDCHAMD |
1958 ATX TELECOMMUNICATIONS SERVICES, LTD |
238 |
|
2003-02-25 |
|
443-260
| A |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 0 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 1 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 2 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 3 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 4 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 5 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 6 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 7 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 8 |
Salisbury |
MD |
SLBRMDSBDS1 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-260
| 9 |
Salisbury |
MD |
SLBRMDSBRMD |
6664 SPRINT SPECTRUM L.P. |
242 |
|
2011-10-10 |
|
443-261
| A |
Severna Park |
MD |
BLTOMDKHDS0 |
7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD |
238 |
|
|
|
443-261
| 0 |
Severna Park |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-09-24 |
|
443-261
| 1 |
Severna Park |
MD |
CLMAMDJTDS0 |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2002-04-17 |
|
443-261
| 2 |
Severna Park |
MD |
CLMAMDJTDS0 |
2589 US LEC OF MARYLAND, INC. |
238 |
|
2010-08-06 |
|
443-261
| 3 |
Severna Park |
MD |
BLTOMDKHDS0 |
7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD |
238 |
|
2008-10-01 |
|
443-261
| 4 |
Severna Park |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-09-04 |
|
443-261
| 5 |
Severna Park |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-10-28 |
|
443-261
| 6 |
Severna Park |
MD |
EKRGMD92MMD |
6664 SPRINT SPECTRUM L.P. |
238 |
|
2010-11-12 |
|
443-261
| 7 |
Severna Park |
MD |
EKRGMD92MMD |
6664 SPRINT SPECTRUM L.P. |
238 |
|
2010-11-12 |
|
443-261
| 8 |
Severna Park |
MD |
EKRGMD92MMD |
6664 SPRINT SPECTRUM L.P. |
238 |
|
2010-11-12 |
|
443-261
| 9 |
Severna Park |
MD |
EKRGMD92MMD |
6664 SPRINT SPECTRUM L.P. |
238 |
|
2010-11-12 |
|
443-262
| A |
Centreville |
MD |
CNVLMDCTRS2 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-262
| 0 |
Centreville |
MD |
SLBRMDSBXFX |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
242 |
|
2012-08-27 |
|
443-262
| 1 |
Centreville |
MD |
SLBRMDSCXLX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
242 |
|
2004-01-18 |
|
443-262
| 2 |
Centreville |
MD |
ESTNMDESQMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2004-02-28 |
|
443-262
| 3 |
Centreville |
MD |
SLBRMDFSDS0 |
2593 CORE COMMUNICATIONS, INC. - MD |
242 |
|
2004-04-02 |
|
443-262
| 4 |
Centreville |
MD |
CNVLMDCTRS2 |
9212 VERIZON MARYLAND, INC. |
242 |
|
2004-06-21 |
|
443-262
| 5 |
Centreville |
MD |
ESTNMDESQMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2005-12-02 |
|
443-262
| 6 |
Centreville |
MD |
ESTNMDESQMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
2006-04-01 |
|
443-262
| 7 |
Centreville |
MD |
SLBRMD902MD |
073H TELNYX LLC |
242 |
|
2017-09-13 |
|
443-262
| 8 |
Centreville |
MD |
ESTNMDESMMD |
228C IDT AMERICA CORP - MD |
242 |
|
2006-05-06 |
|
443-262
| 9 |
Centreville |
MD |
CNVLMDCTRS2 |
9212 VERIZON MARYLAND, INC. |
242 |
|
|
|
443-263
| A |
Baltimore |
MD |
BLTMMDCHDS3 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-264
| A |
Pikesville |
MD |
BLTMMDCHYMD |
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
|
|
443-264
| 2 |
Pikesville |
MD |
|
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
2019-03-29 |
|
443-264
| 3 |
Pikesville |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2018-05-31 |
|
443-264
| 4 |
Pikesville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2018-06-08 |
|
443-264
| 5 |
Pikesville |
MD |
|
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
2018-06-16 |
|
443-264
| 6 |
Pikesville |
MD |
|
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
2018-06-16 |
|
443-264
| 7 |
Pikesville |
MD |
|
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
2018-06-16 |
|
443-264
| 8 |
Pikesville |
MD |
BLTMMDCHDMD |
551G BRIGHTLINK COMMUNICATIONS, LLC |
238 |
|
2018-07-23 |
|
443-264
| 9 |
Pikesville |
MD |
|
2593 CORE COMMUNICATIONS, INC. - MD |
238 |
|
2018-10-23 |
|
443-265
| A |
Fork |
MD |
HNVAMDBHRS0 |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-265
| 0 |
Fork |
MD |
HNVAMDBHRS0 |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
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Last updated: Sun, 28 Feb 2021 19:06:05 UTC
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