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 |
443-231
| 5 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2005-03-10 |
|
443-231
| 6 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2006-06-20 |
|
443-231
| 7 |
Essex |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2006-06-20 |
|
443-231
| 8 |
Essex |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2006-08-25 |
|
443-231
| 9 |
Essex |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-05-31 |
|
443-232
| A |
Willards |
MD |
SLBRMD90DS0 |
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
|
|
443-232
| 0 |
Willards |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-04-30 |
|
443-232
| 1 |
Willards |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-07-04 |
|
443-232
| 2 |
Willards |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-07-04 |
|
443-232
| 3 |
Willards |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-232
| 4 |
Willards |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-232
| 5 |
Willards |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-232
| 6 |
Willards |
MD |
SLBRMD90DS0 |
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2019-06-07 |
|
443-232
| 7 |
Willards |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE, LLC |
242 |
|
2007-08-08 |
|
443-232
| 8 |
Willards |
MD |
SLBRMD902MD |
073H TELNYX LLC |
242 |
|
2017-09-13 |
|
443-232
| 9 |
Willards |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-04-30 |
|
443-233
| A |
Vienna |
MD |
SLBRMDSBX6Y |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
242 |
|
|
|
443-233
| 0 |
Vienna |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-08-09 |
|
443-233
| 1 |
Vienna |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-08-09 |
|
443-233
| 2 |
Vienna |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE, LLC |
242 |
|
2007-08-08 |
|
443-233
| 3 |
Vienna |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-233
| 4 |
Vienna |
MD |
|
145J TERRA NOVA TELECOM INC. |
242 |
|
2022-04-23 |
|
443-233
| 5 |
Vienna |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2020-10-17 |
|
443-233
| 6 |
Vienna |
MD |
SLBRMDSBXFX |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
242 |
|
2012-05-26 |
|
443-233
| 7 |
Vienna |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-233
| 8 |
Vienna |
MD |
SLBRMD902MD |
073H TELNYX LLC |
242 |
|
2017-09-13 |
|
443-233
| 9 |
Vienna |
MD |
SLBRMDSBX6Y |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
242 |
|
|
|
443-234
| A |
Snow Hill |
MD |
SLBRMDSBX6Y |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
242 |
|
|
|
443-234
| 0 |
Snow Hill |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2019-03-04 |
|
443-234
| 1 |
Snow Hill |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2021-03-05 |
|
443-234
| 2 |
Snow Hill |
MD |
SLBRMDSBX6Y |
7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD |
242 |
|
|
|
443-234
| 3 |
Snow Hill |
MD |
ESTNMDES5MD |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
242 |
|
2016-05-06 |
|
443-234
| 4 |
Snow Hill |
MD |
|
145J TERRA NOVA TELECOM INC. |
242 |
|
2024-02-15 |
|
443-234
| 5 |
Snow Hill |
MD |
SLBRMDSBXLX |
318J COMCAST IP PHONE, LLC |
242 |
|
2006-07-31 |
|
443-234
| 6 |
Snow Hill |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-234
| 7 |
Snow Hill |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
242 |
|
2018-06-17 |
|
443-234
| 8 |
Snow Hill |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2017-04-14 |
|
443-234
| 9 |
Snow Hill |
MD |
SLBRMDSBXVX |
876D ONVOY, LLC - MD |
242 |
|
2019-03-04 |
|
443-235
| A |
Salisbury |
MD |
ESTNMDESQMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
242 |
|
|
|
443-236
| A |
Cardiff |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
|
|
443-237
| A |
North Beach |
MD |
BLTMMD91GT0 |
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
|
|
443-238
| A |
Parkton |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-238
| 1 |
Parkton |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-21 |
|
443-238
| 2 |
Parkton |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-238
| 3 |
Parkton |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-21 |
|
443-238
| 4 |
Parkton |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2024-02-15 |
|
443-238
| 5 |
Parkton |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2015-09-21 |
|
443-238
| 6 |
Parkton |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-238
| 7 |
Parkton |
MD |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-12 |
|
443-238
| 8 |
Parkton |
MD |
BLTMMDCHX7X |
073H TELNYX LLC |
238 |
|
2017-04-26 |
|
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Last updated: Wed, 07 Feb 2024 04:12:25 UTC
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