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 |
443-327
| 0 |
Aberdeen |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
236 |
|
|
|
443-327
| 1 |
Aberdeen |
MD |
CLMAMDJTAMD |
2589 US LEC OF MARYLAND, INC. |
236 |
|
2002-05-20 |
|
443-327
| 2 |
Aberdeen |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2005-10-13 |
|
443-327
| 3 |
Aberdeen |
MD |
BLTMMDCHXNX |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2005-10-13 |
|
443-327
| 4 |
Aberdeen |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
236 |
|
2005-10-13 |
|
443-327
| 5 |
Aberdeen |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
236 |
|
2005-10-13 |
|
443-327
| 6 |
Aberdeen |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-09-18 |
|
443-327
| 7 |
Aberdeen |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
236 |
|
2006-09-18 |
|
443-327
| 8 |
Aberdeen |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
236 |
|
2005-07-25 |
|
443-327
| 9 |
Aberdeen |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2008-12-11 |
|
443-328
| A |
Sykesville |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-328
| 0 |
Sykesville |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-04-29 |
|
443-328
| 1 |
Sykesville |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-328
| 2 |
Sykesville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-05-01 |
|
443-328
| 3 |
Sykesville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-05-22 |
|
443-328
| 4 |
Sykesville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-05-22 |
|
443-328
| 5 |
Sykesville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2015-10-16 |
|
443-328
| 6 |
Sykesville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2014-01-26 |
|
443-328
| 7 |
Sykesville |
MD |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-25 |
|
443-328
| 8 |
Sykesville |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-05-31 |
|
443-328
| 9 |
Sykesville |
MD |
|
515J IP HORIZON LLC |
238 |
|
2015-03-21 |
|
443-329
| A |
Waterloo (Washington DC LATA) |
MD |
WASJDCDCDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
236 |
|
|
|
443-329
| 0 |
Waterloo (Washington DC LATA) |
MD |
WASJDCDCDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
236 |
|
|
|
443-329
| 1 |
Waterloo (Washington DC LATA) |
MD |
WASJDCDCDS0 |
6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD |
236 |
|
|
|
443-329
| 2 |
Waterloo (Washington DC LATA) |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2006-02-20 |
|
443-329
| 3 |
Waterloo (Washington DC LATA) |
MD |
WASLDCRGDS0 |
281E YMAX COMMUNICATIONS CORP. - MD |
236 |
|
2009-01-15 |
|
443-329
| 4 |
Waterloo (Washington DC LATA) |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
443-329
| 5 |
Waterloo (Washington DC LATA) |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2020-06-20 |
|
443-329
| 6 |
Waterloo (Washington DC LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-30 |
|
443-329
| 7 |
Waterloo (Washington DC LATA) |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-04-30 |
|
443-329
| 8 |
Waterloo (Washington DC LATA) |
MD |
WASHDC127MD |
073H TELNYX LLC |
236 |
|
2017-04-27 |
|
443-329
| 9 |
Waterloo (Washington DC LATA) |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2020-06-20 |
|
443-330
| A |
Cockeysville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-330
| 0 |
Cockeysville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-330
| 1 |
Cockeysville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-330
| 2 |
Cockeysville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2010-02-22 |
|
443-330
| 3 |
Cockeysville |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
2005-03-10 |
|
443-330
| 4 |
Cockeysville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
2004-09-05 |
|
443-330
| 5 |
Cockeysville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2006-10-22 |
|
443-330
| 6 |
Cockeysville |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
2011-04-13 |
|
443-330
| 7 |
Cockeysville |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2013-09-08 |
|
443-330
| 8 |
Cockeysville |
MD |
MANRMDMNRS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
2006-10-16 |
|
443-330
| 9 |
Cockeysville |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-331
| A |
Taneytown |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-331
| 0 |
Taneytown |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2024-02-15 |
|
443-331
| 1 |
Taneytown |
MD |
BLTMMDCH14Z |
2697 CTC COMMUNICATIONS CORP. - MD |
238 |
|
|
|
443-331
| 2 |
Taneytown |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-03-03 |
|
443-331
| 3 |
Taneytown |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2014-11-25 |
|
443-331
| 4 |
Taneytown |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-21 |
|
443-331
| 5 |
Taneytown |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-21 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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