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 |
443-774
| 8 |
Columbia |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2019-04-19 |
|
443-774
| 9 |
Columbia |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2019-01-19 |
|
443-775
| A |
Annapolis |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
|
|
443-775
| 0 |
Annapolis |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2016-05-06 |
|
443-775
| 1 |
Annapolis |
MD |
CLMAMDORGT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
238 |
|
2014-11-25 |
|
443-775
| 2 |
Annapolis |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-12-31 |
|
443-775
| 3 |
Annapolis |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-12-31 |
|
443-775
| 4 |
Annapolis |
MD |
BLTQMD012MD |
964H BARR TELL USA, INC. |
238 |
|
2016-12-17 |
|
443-775
| 5 |
Annapolis |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2015-11-18 |
|
443-775
| 6 |
Annapolis |
MD |
BLTMMDCH25Z |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
238 |
|
2015-05-28 |
|
443-775
| 7 |
Annapolis |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2016-02-22 |
|
443-775
| 8 |
Annapolis |
MD |
|
515J IP HORIZON LLC |
238 |
|
2016-05-31 |
|
443-775
| 9 |
Annapolis |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2015-11-15 |
|
443-776
| A |
Elkridge |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
|
|
443-776
| 0 |
Elkridge |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2014-03-17 |
|
443-776
| 1 |
Elkridge |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2014-03-17 |
|
443-776
| 2 |
Elkridge |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-09-27 |
|
443-776
| 3 |
Elkridge |
MD |
BLTMMDCHXFX |
318J COMCAST IP PHONE, LLC |
238 |
|
2014-07-31 |
|
443-776
| 4 |
Elkridge |
MD |
BLTMMDCH42Z |
876D ONVOY, LLC - MD |
238 |
|
2014-09-27 |
|
443-776
| 5 |
Elkridge |
MD |
BLTOMDKHDS0 |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
238 |
|
2015-01-28 |
|
443-776
| 6 |
Elkridge |
MD |
BLTMMDCH25Z |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
238 |
|
2015-06-11 |
|
443-776
| 7 |
Elkridge |
MD |
BLTMMDDN2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
238 |
|
2014-06-25 |
|
443-776
| 8 |
Elkridge |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2015-07-04 |
|
443-776
| 9 |
Elkridge |
MD |
|
515J IP HORIZON LLC |
238 |
|
2015-03-23 |
|
443-777
| A |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 0 |
Essex |
MD |
BLTMMDCHX7X |
073H TELNYX LLC |
238 |
|
2017-03-14 |
|
443-777
| 1 |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 2 |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 3 |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 4 |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 5 |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 6 |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 7 |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 8 |
Essex |
MD |
ESSXMDEXDS0 |
9212 VERIZON MARYLAND, INC. |
238 |
|
|
|
443-777
| 9 |
Essex |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
238 |
|
2019-04-30 |
|
443-778
| A |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
443-778
| 0 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
443-778
| 1 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2002-06-25 |
|
443-778
| 2 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-02-15 |
|
443-778
| 3 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
443-778
| 4 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
443-778
| 5 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
443-778
| 6 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
443-778
| 7 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
443-778
| 8 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
443-778
| 9 |
Waterloo (Washington DC LATA) |
MD |
LARLMDLRDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
2003-02-15 |
|
443-779
| A |
Aberdeen |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
236 |
|
|
|
443-779
| 0 |
Aberdeen |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-02-06 |
|
443-779
| 1 |
Aberdeen |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
236 |
|
2010-10-20 |
|
443-779
| 2 |
Aberdeen |
MD |
BLTMMDSNDS5 |
4773 XO MARYLAND, LLC |
236 |
|
2010-10-20 |
|
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Last updated: Tue, 16 Apr 2024 01:38:01 UTC
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