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 |
443-656
| 8 |
Columbia |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-656
| 9 |
Columbia |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-07-11 |
|
443-657
| A |
Randallstown |
MD |
BLTMMDDNDS2 |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
238 |
|
|
|
443-657
| 0 |
Randallstown |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2014-11-08 |
|
443-657
| 1 |
Randallstown |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-10-14 |
|
443-657
| 2 |
Randallstown |
MD |
BLTMMDDNDS2 |
7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD |
238 |
|
|
|
443-657
| 3 |
Randallstown |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2014-11-08 |
|
443-657
| 6 |
Randallstown |
MD |
|
145J TERRA NOVA TELECOM INC. |
238 |
|
2024-02-15 |
|
443-657
| 7 |
Randallstown |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2015-11-14 |
|
443-657
| 8 |
Randallstown |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-02-29 |
|
443-657
| 9 |
Randallstown |
MD |
|
876D ONVOY, LLC - MD |
238 |
|
2024-02-29 |
|
443-658
| A |
Woodlawn |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
|
|
443-659
| A |
West River |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
|
|
443-660
| A |
Pikesville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
|
|
443-660
| 0 |
Pikesville |
MD |
|
515J IP HORIZON LLC |
238 |
|
2013-09-06 |
|
443-660
| 1 |
Pikesville |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2005-06-05 |
|
443-660
| 2 |
Pikesville |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2005-06-05 |
|
443-660
| 3 |
Pikesville |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2005-06-05 |
|
443-660
| 4 |
Pikesville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2022-12-12 |
|
443-660
| 5 |
Pikesville |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2005-06-05 |
|
443-660
| 6 |
Pikesville |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2012-09-24 |
|
443-660
| 7 |
Pikesville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2012-09-21 |
|
443-660
| 8 |
Pikesville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2006-06-03 |
|
443-660
| 9 |
Pikesville |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
|
|
443-661
| A |
Waterloo |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-661
| 0 |
Waterloo |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-661
| 1 |
Waterloo |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-661
| 2 |
Waterloo |
MD |
|
515J IP HORIZON LLC |
238 |
|
2017-07-07 |
|
443-661
| 3 |
Waterloo |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-661
| 4 |
Waterloo |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2008-10-06 |
|
443-661
| 5 |
Waterloo |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-661
| 7 |
Waterloo |
MD |
BLTMMDCHXVX |
321J HD CARRIER LLC |
238 |
|
2020-05-02 |
|
443-661
| 8 |
Waterloo |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2021-04-29 |
|
443-661
| 9 |
Waterloo |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2022-09-25 |
|
443-662
| A |
Sparks-Glencoe |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-662
| 0 |
Sparks-Glencoe |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-662
| 1 |
Sparks-Glencoe |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-662
| 2 |
Sparks-Glencoe |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-662
| 3 |
Sparks-Glencoe |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2018-06-16 |
|
443-662
| 4 |
Sparks-Glencoe |
MD |
CLMAMDNIDS1 |
7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
238 |
|
2004-07-24 |
|
443-662
| 5 |
Sparks-Glencoe |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2020-07-03 |
|
443-662
| 6 |
Sparks-Glencoe |
MD |
BLTMMDCHX7X |
073H TELNYX LLC |
238 |
|
2017-04-26 |
|
443-662
| 7 |
Sparks-Glencoe |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-662
| 8 |
Sparks-Glencoe |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2013-05-04 |
|
443-662
| 9 |
Sparks-Glencoe |
MD |
HNVAMDBHAMD |
3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD |
238 |
|
|
|
443-663
| A |
Woodlawn |
MD |
WDLWMDWLDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-663
| 0 |
Woodlawn |
MD |
BLTMMDCH25Z |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
238 |
|
2015-06-20 |
|
443-663
| 1 |
Woodlawn |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
238 |
|
2013-11-04 |
|
443-663
| 2 |
Woodlawn |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-05-02 |
|
443-663
| 3 |
Woodlawn |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-03-14 |
|
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Last updated: Wed, 07 Feb 2024 04:12:25 UTC
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