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 |
| 240-448
| 8 |
Waldorf |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2022-10-07 |
|
| 240-448
| 9 |
Waldorf |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2023-10-20 |
|
| 240-449
| A |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 240-449
| 0 |
Gaithersburg |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2003-11-24 |
|
| 240-449
| 1 |
Gaithersburg |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
2005-09-03 |
|
| 240-449
| 2 |
Gaithersburg |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2003-04-23 |
|
| 240-449
| 3 |
Gaithersburg |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2006-05-07 |
|
| 240-449
| 4 |
Gaithersburg |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2011-05-07 |
|
| 240-449
| 5 |
Gaithersburg |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2005-03-24 |
|
| 240-449
| 6 |
Gaithersburg |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2005-03-24 |
|
| 240-449
| 7 |
Gaithersburg |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2005-03-24 |
|
| 240-449
| 8 |
Gaithersburg |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2006-05-07 |
|
| 240-449
| 9 |
Gaithersburg |
MD |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 240-450
| A |
Washington Zone 3 |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
2025-04-02 |
|
| 240-450
| 0 |
Washington Zone 3 |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-450
| 1 |
Washington Zone 3 |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-450
| 2 |
Washington Zone 3 |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2005-04-03 |
|
| 240-450
| 3 |
Washington Zone 3 |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-450
| 4 |
Washington Zone 3 |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-450
| 5 |
Washington Zone 3 |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-450
| 6 |
Washington Zone 3 |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-450
| 7 |
Washington Zone 3 |
MD |
|
197D VONAGE AMERICA LLC |
236 |
|
2020-05-20 |
|
| 240-450
| 8 |
Washington Zone 3 |
MD |
|
197D VONAGE AMERICA LLC |
236 |
|
2020-05-20 |
|
| 240-450
| 9 |
Washington Zone 3 |
MD |
|
829J PAETEC ITEL, LLC |
236 |
|
|
|
| 240-451
| A |
Thurmont |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
|
|
| 240-451
| 0 |
Thurmont |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2017-07-31 |
|
| 240-451
| 1 |
Thurmont |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2017-07-31 |
|
| 240-451
| 2 |
Thurmont |
MD |
|
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2018-07-12 |
|
| 240-451
| 3 |
Thurmont |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-451
| 4 |
Thurmont |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-451
| 5 |
Thurmont |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-451
| 6 |
Thurmont |
MD |
|
073H TELNYX LLC |
240 |
|
2017-08-08 |
|
| 240-451
| 7 |
Thurmont |
MD |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
240 |
|
2016-10-28 |
|
| 240-451
| 8 |
Thurmont |
MD |
|
876D ONVOY, LLC - MD |
240 |
|
2016-10-02 |
|
| 240-451
| 9 |
Thurmont |
MD |
|
876D ONVOY, LLC - MD |
240 |
|
2016-10-02 |
|
| 240-452
| A |
Hagerstown |
MD |
|
5562 METROPCS, INC. |
240 |
|
|
|
| 240-452
| 0 |
Hagerstown |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2011-06-02 |
|
| 240-452
| 1 |
Hagerstown |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2011-06-02 |
|
| 240-452
| 2 |
Hagerstown |
MD |
|
5562 METROPCS, INC. |
240 |
|
2011-04-28 |
|
| 240-452
| 3 |
Hagerstown |
MD |
|
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2010-09-12 |
|
| 240-452
| 4 |
Hagerstown |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2011-01-07 |
|
| 240-452
| 5 |
Hagerstown |
MD |
|
5562 METROPCS, INC. |
240 |
|
2011-04-28 |
|
| 240-452
| 6 |
Hagerstown |
MD |
|
5562 METROPCS, INC. |
240 |
|
2011-04-28 |
|
| 240-452
| 7 |
Hagerstown |
MD |
|
5562 METROPCS, INC. |
240 |
|
2011-04-28 |
|
| 240-452
| 8 |
Hagerstown |
MD |
|
5562 METROPCS, INC. |
240 |
|
2011-06-16 |
|
| 240-452
| 9 |
Hagerstown |
MD |
|
5562 METROPCS, INC. |
240 |
|
2011-06-16 |
|
| 240-453
| A |
Washington Zone 10 |
MD |
RKVLMDRVDS1 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-453
| 0 |
Washington Zone 10 |
MD |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-453
| 1 |
Washington Zone 10 |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2017-01-17 |
|
| 240-453
| 2 |
Washington Zone 10 |
MD |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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