Local Calling Guide
Area code/prefix search
NPA: 240
[Rate centres in NPA 240]
[Dial plan for NPA 240]
<< 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 240-771
| 2 |
Poolesville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-07-01 |
|
| 240-771
| 3 |
Poolesville |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2016-08-05 |
|
| 240-771
| 4 |
Poolesville |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2016-08-05 |
|
| 240-771
| 5 |
Poolesville |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2018-02-02 |
|
| 240-771
| 6 |
Poolesville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-07-01 |
|
| 240-771
| 7 |
Poolesville |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2018-07-01 |
|
| 240-771
| 8 |
Poolesville |
MD |
|
073H TELNYX LLC |
236 |
|
2017-04-27 |
|
| 240-771
| 9 |
Poolesville |
MD |
|
515J IP HORIZON LLC |
236 |
|
2016-05-31 |
|
| 240-772
| A |
Frederick |
MD |
FRDRMDFRXSX |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
|
|
| 240-772
| 0 |
Frederick |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2012-01-19 |
|
| 240-772
| 1 |
Frederick |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2012-10-12 |
|
| 240-772
| 2 |
Frederick |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2013-11-01 |
|
| 240-772
| 3 |
Frederick |
MD |
|
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2012-08-29 |
|
| 240-772
| 4 |
Frederick |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
240 |
|
2012-10-18 |
|
| 240-772
| 5 |
Frederick |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2012-10-07 |
|
| 240-772
| 6 |
Frederick |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2014-07-01 |
|
| 240-772
| 7 |
Frederick |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
240 |
|
2014-09-01 |
|
| 240-772
| 8 |
Frederick |
MD |
|
5562 METROPCS, INC. |
240 |
|
2013-08-15 |
|
| 240-772
| 9 |
Frederick |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2014-06-21 |
|
| 240-773
| A |
Washington Zone 10 |
MD |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-774
| A |
Lonaconing |
MD |
HGTWMDHGDMD |
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
|
|
| 240-774
| 0 |
Lonaconing |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2015-12-03 |
|
| 240-774
| 1 |
Lonaconing |
MD |
|
876D ONVOY, LLC - MD |
240 |
|
2016-09-12 |
|
| 240-774
| 2 |
Lonaconing |
MD |
|
876D ONVOY, LLC - MD |
240 |
|
2016-09-12 |
|
| 240-774
| 3 |
Lonaconing |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-774
| 4 |
Lonaconing |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-774
| 5 |
Lonaconing |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-774
| 6 |
Lonaconing |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2019-03-29 |
|
| 240-774
| 7 |
Lonaconing |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2016-11-12 |
|
| 240-774
| 8 |
Lonaconing |
MD |
|
073H TELNYX LLC |
240 |
|
2017-08-08 |
|
| 240-775
| A |
Westernport |
MD |
HGTWMDHGDMD |
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
|
|
| 240-775
| 0 |
Westernport |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2015-12-03 |
|
| 240-775
| 1 |
Westernport |
MD |
|
876D ONVOY, LLC - MD |
240 |
|
2016-09-13 |
|
| 240-775
| 2 |
Westernport |
MD |
|
876D ONVOY, LLC - MD |
240 |
|
2016-09-13 |
|
| 240-775
| 3 |
Westernport |
MD |
|
876D ONVOY, LLC - MD |
240 |
|
2017-12-14 |
|
| 240-775
| 4 |
Westernport |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-775
| 5 |
Westernport |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-775
| 6 |
Westernport |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-775
| 7 |
Westernport |
MD |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
240 |
|
2016-11-12 |
|
| 240-775
| 8 |
Westernport |
MD |
|
073H TELNYX LLC |
240 |
|
2017-08-08 |
|
| 240-775
| 9 |
Westernport |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2019-06-21 |
|
| 240-776
| A |
La Plata |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-776
| 0 |
La Plata |
MD |
|
624H ONVOY SPECTRUM, LLC |
236 |
|
2021-12-11 |
|
| 240-776
| 1 |
La Plata |
MD |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2023-03-02 |
|
| 240-776
| 2 |
La Plata |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2010-02-22 |
|
| 240-776
| 3 |
La Plata |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2021-12-23 |
|
| 240-776
| 4 |
La Plata |
MD |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2007-09-20 |
|
| 240-776
| 5 |
La Plata |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2011-08-15 |
|
| 240-776
| 6 |
La Plata |
MD |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2008-08-01 |
|
| 240-776
| 7 |
La Plata |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2024-03-03 |
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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