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 >>
NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
443-577
| 5 |
Glen Burnie |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
2005-01-08 |
|
443-577
| 6 |
Glen Burnie |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2022-11-24 |
|
443-577
| 7 |
Glen Burnie |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-05-01 |
|
443-577
| 8 |
Glen Burnie |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2016-07-14 |
|
443-577
| 9 |
Glen Burnie |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-578
| A |
Cockeysville |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
|
|
443-578
| 0 |
Cockeysville |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
|
|
443-578
| 1 |
Cockeysville |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2014-10-21 |
|
443-578
| 2 |
Cockeysville |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2015-10-26 |
|
443-578
| 3 |
Cockeysville |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2012-02-27 |
|
443-578
| 4 |
Cockeysville |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
|
|
443-578
| 5 |
Cockeysville |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
|
|
443-578
| 6 |
Cockeysville |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2013-08-15 |
|
443-578
| 7 |
Cockeysville |
MD |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-25 |
|
443-578
| 8 |
Cockeysville |
MD |
PIVLMDPKFMD |
9170 BROADVIEW NETWORKS, INC. - MD |
238 |
|
2008-09-26 |
|
443-578
| 9 |
Cockeysville |
MD |
|
515J IP HORIZON LLC |
238 |
|
2015-03-23 |
|
443-579
| A |
Essex |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-579
| 0 |
Essex |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-579
| 1 |
Essex |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-579
| 2 |
Essex |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-579
| 3 |
Essex |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-579
| 4 |
Essex |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-06-26 |
|
443-579
| 5 |
Essex |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2008-12-11 |
|
443-579
| 6 |
Essex |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2008-07-17 |
|
443-579
| 7 |
Essex |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-10-28 |
|
443-579
| 8 |
Essex |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2011-02-26 |
|
443-579
| 9 |
Essex |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
238 |
|
|
|
443-580
| A |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2024-02-09 |
|
443-580
| 0 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-580
| 1 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-580
| 2 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-580
| 3 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-580
| 4 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-580
| 5 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-580
| 7 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-580
| 8 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-580
| 9 |
Baltimore |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2011-10-27 |
|
443-581
| A |
Chase |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
|
|
443-581
| 0 |
Chase |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-03-04 |
|
443-581
| 1 |
Chase |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-03-04 |
|
443-581
| 5 |
Chase |
MD |
BLTMMDCHXUX |
624H ONVOY SPECTRUM, LLC |
238 |
|
2021-02-24 |
|
443-581
| 6 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-07-30 |
|
443-581
| 7 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-07-30 |
|
443-581
| 8 |
Chase |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2019-07-06 |
|
443-581
| 9 |
Chase |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-30 |
|
443-582
| A |
Churchville |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-582
| 0 |
Churchville |
MD |
BLTMMDCHX7X |
073H TELNYX LLC |
238 |
|
2017-04-26 |
|
443-582
| 1 |
Churchville |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-582
| 2 |
Churchville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-07-30 |
|
443-582
| 3 |
Churchville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2017-05-29 |
|
<< 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 >>
Last updated: Wed, 07 Feb 2024 04:12:25 UTC
Sponsored by: VoIP.ms
Like this site? We accept donations via PayPal.