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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 >>
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
443-441
| 4 |
Glenwood |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2024-02-15 |
|
443-441
| 5 |
Glenwood |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2018-01-22 |
|
443-441
| 6 |
Glenwood |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-04-21 |
|
443-441
| 7 |
Glenwood |
MD |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-12 |
|
443-441
| 8 |
Glenwood |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-05-31 |
|
443-441
| 9 |
Glenwood |
MD |
BLTMMDFMDS0 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
|
|
443-442
| A |
Parkville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-442
| 0 |
Parkville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-442
| 1 |
Parkville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-442
| 2 |
Parkville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-442
| 3 |
Parkville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-05-11 |
|
443-442
| 4 |
Parkville |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2014-07-01 |
|
443-442
| 5 |
Parkville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-05-11 |
|
443-442
| 6 |
Parkville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2014-07-18 |
|
443-442
| 7 |
Parkville |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2015-10-01 |
|
443-442
| 8 |
Parkville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-442
| 9 |
Parkville |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2021-11-04 |
|
443-443
| A |
Arbutus |
MD |
BLTQMD013MD |
939H COMMIO, LLC |
238 |
|
2024-01-22 |
|
443-443
| 0 |
Arbutus |
MD |
BLTQMD013MD |
939H COMMIO, LLC |
238 |
|
2024-01-22 |
|
443-443
| 1 |
Arbutus |
MD |
BLTQMD013MD |
939H COMMIO, LLC |
238 |
|
2024-01-22 |
|
443-443
| 2 |
Arbutus |
MD |
BLTQMD013MD |
939H COMMIO, LLC |
238 |
|
2024-01-22 |
|
443-443
| 3 |
Arbutus |
MD |
BLTQMD013MD |
939H COMMIO, LLC |
238 |
|
2024-01-22 |
|
443-443
| 4 |
Arbutus |
MD |
BLTQMD013MD |
939H COMMIO, LLC |
238 |
|
2024-01-22 |
|
443-443
| 5 |
Arbutus |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-03-08 |
|
443-443
| 6 |
Arbutus |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-04-13 |
|
443-444
| A |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-444
| 0 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-444
| 1 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-444
| 2 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-444
| 3 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-444
| 4 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-444
| 5 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
443-444
| 6 |
Baltimore |
MD |
BLTMMDYKDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2005-08-27 |
|
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 |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
238 |
|
2001-11-19 |
|
443-446
| A |
Queenstown |
MD |
ESTNMDES5MD |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
242 |
|
|
|
443-446
| 1 |
Queenstown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2019-05-03 |
|
443-446
| 2 |
Queenstown |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2019-03-29 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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