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 |
| 443-380
| 8 |
Woodlawn |
MD |
|
9212 VERIZON MARYLAND, INC. |
238 |
|
2011-04-15 |
|
| 443-380
| 9 |
Woodlawn |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-05-01 |
|
| 443-381
| A |
Reisterstown |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
|
|
| 443-381
| 0 |
Reisterstown |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2021-09-23 |
|
| 443-381
| 1 |
Reisterstown |
MD |
|
5562 METROPCS, INC. |
238 |
|
2019-10-13 |
|
| 443-381
| 2 |
Reisterstown |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2020-01-01 |
|
| 443-381
| 3 |
Reisterstown |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-11-24 |
|
| 443-381
| 4 |
Reisterstown |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2017-11-24 |
|
| 443-381
| 5 |
Reisterstown |
MD |
|
5562 METROPCS, INC. |
238 |
|
2018-03-16 |
|
| 443-381
| 6 |
Reisterstown |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-03-09 |
|
| 443-381
| 7 |
Reisterstown |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-05-03 |
|
| 443-381
| 8 |
Reisterstown |
MD |
|
5562 METROPCS, INC. |
238 |
|
2018-02-08 |
|
| 443-381
| 9 |
Reisterstown |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2019-04-05 |
|
| 443-382
| A |
Cambridge |
MD |
SLBRMD90DS0 |
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
|
|
| 443-383
| A |
Silver Run |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
2025-04-01 |
|
| 443-383
| 0 |
Silver Run |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2019-03-08 |
|
| 443-383
| 1 |
Silver Run |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
|
|
| 443-383
| 2 |
Silver Run |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2019-03-08 |
|
| 443-383
| 3 |
Silver Run |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2016-03-25 |
|
| 443-383
| 4 |
Silver Run |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2016-03-25 |
|
| 443-383
| 5 |
Silver Run |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2019-03-08 |
|
| 443-383
| 6 |
Silver Run |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2019-03-08 |
|
| 443-383
| 7 |
Silver Run |
MD |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-12 |
|
| 443-383
| 8 |
Silver Run |
MD |
|
073H TELNYX LLC |
238 |
|
2017-04-26 |
|
| 443-383
| 9 |
Silver Run |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2019-03-08 |
|
| 443-384
| A |
Parkville |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
2025-04-01 |
|
| 443-384
| 0 |
Parkville |
MD |
|
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
| 443-384
| 1 |
Parkville |
MD |
|
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
| 443-384
| 2 |
Parkville |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
2001-11-01 |
|
| 443-384
| 3 |
Parkville |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
2001-11-01 |
|
| 443-384
| 4 |
Parkville |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
2001-11-01 |
|
| 443-384
| 5 |
Parkville |
MD |
|
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2020-11-14 |
|
| 443-384
| 6 |
Parkville |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
2001-11-01 |
|
| 443-384
| 7 |
Parkville |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2014-03-31 |
|
| 443-384
| 8 |
Parkville |
MD |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-04-02 |
|
| 443-384
| 9 |
Parkville |
MD |
|
829J PAETEC ITEL, LLC |
238 |
|
|
|
| 443-385
| A |
Easton |
MD |
SLBRMD90DS0 |
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
|
|
| 443-386
| A |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 0 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 1 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 2 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 3 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 4 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 5 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 6 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 7 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
| 443-386
| 8 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2003-07-18 |
|
| 443-386
| 9 |
Baltimore |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2003-11-03 |
|
| 443-387
| A |
Pocomoke |
MD |
SLBRMD90DS0 |
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
|
|
| 443-388
| A |
Baltimore |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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