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 |
| 240-657
| 1 |
Frostburg |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2016-09-12 |
|
| 240-657
| 2 |
Frostburg |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2016-09-12 |
|
| 240-657
| 3 |
Frostburg |
MD |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
2016-02-20 |
|
| 240-657
| 4 |
Frostburg |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-657
| 5 |
Frostburg |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-657
| 6 |
Frostburg |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-657
| 7 |
Frostburg |
MD |
FRDRMDFRXKX |
508J CENTURYLINK COMMUNICATIONS, LLC |
240 |
|
2016-11-12 |
|
| 240-657
| 8 |
Frostburg |
MD |
CMLDMDCM2MD |
836G SHENTEL COMMUNICATIONS, LLC. - MD |
240 |
|
2020-10-22 |
|
| 240-657
| 9 |
Frostburg |
MD |
HGTWMD530MD |
073H TELNYX LLC |
240 |
|
2017-08-08 |
|
| 240-658
| A |
Gaithersburg |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
|
|
| 240-658
| 0 |
Gaithersburg |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2019-01-25 |
|
| 240-658
| 1 |
Gaithersburg |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2019-01-25 |
|
| 240-658
| 2 |
Gaithersburg |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2019-01-25 |
|
| 240-658
| 3 |
Gaithersburg |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2019-01-25 |
|
| 240-658
| 4 |
Gaithersburg |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2019-01-25 |
|
| 240-658
| 5 |
Gaithersburg |
MD |
BTVLMD12CMA |
5562 METROPCS, INC. |
236 |
|
2019-11-29 |
|
| 240-658
| 6 |
Gaithersburg |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2019-01-25 |
|
| 240-658
| 7 |
Gaithersburg |
MD |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2021-05-21 |
|
| 240-658
| 8 |
Gaithersburg |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2021-02-18 |
|
| 240-658
| 9 |
Gaithersburg |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2021-02-18 |
|
| 240-659
| A |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 240-659
| 0 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2020-07-09 |
|
| 240-659
| 1 |
Ashton |
MD |
SLSPMD91DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2020-02-27 |
|
| 240-659
| 2 |
Ashton |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-05-01 |
|
| 240-659
| 3 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2019-09-20 |
|
| 240-659
| 4 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2019-09-20 |
|
| 240-659
| 5 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2019-09-20 |
|
| 240-659
| 6 |
Ashton |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-05-01 |
|
| 240-659
| 7 |
Ashton |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
236 |
|
2019-05-01 |
|
| 240-659
| 8 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2019-03-30 |
|
| 240-659
| 9 |
Ashton |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2019-03-30 |
|
| 240-660
| A |
Washington Zone 10 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 240-660
| 0 |
Washington Zone 10 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2015-05-30 |
|
| 240-660
| 1 |
Washington Zone 10 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2015-10-01 |
|
| 240-660
| 2 |
Washington Zone 10 |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2015-10-05 |
|
| 240-660
| 3 |
Washington Zone 10 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-04-28 |
|
| 240-660
| 4 |
Washington Zone 10 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-03-14 |
|
| 240-660
| 5 |
Washington Zone 10 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2016-03-14 |
|
| 240-660
| 6 |
Washington Zone 10 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-02-06 |
|
| 240-660
| 7 |
Washington Zone 10 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-02-06 |
|
| 240-660
| 8 |
Washington Zone 10 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-02-06 |
|
| 240-660
| 9 |
Washington Zone 10 |
MD |
VINNVACB1MD |
361H ATLANTECH ONLINE, INC. - MD |
236 |
|
2015-12-26 |
|
| 240-661
| A |
Lexington Park-Great Mills |
MD |
VINNVACB2MD |
8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) |
236 |
|
|
|
| 240-661
| 0 |
Lexington Park-Great Mills |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2015-10-09 |
|
| 240-661
| 1 |
Lexington Park-Great Mills |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-07-14 |
|
| 240-661
| 2 |
Lexington Park-Great Mills |
MD |
WASHDC126MD |
964H BARR TELL USA, INC. |
236 |
|
2016-11-30 |
|
| 240-661
| 3 |
Lexington Park-Great Mills |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2020-05-08 |
|
| 240-661
| 4 |
Lexington Park-Great Mills |
MD |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2021-05-21 |
|
| 240-661
| 5 |
Lexington Park-Great Mills |
MD |
CHCHMDBEXCX |
228C IDT AMERICA, CORP. - MD |
236 |
|
2016-09-15 |
|
| 240-661
| 6 |
Lexington Park-Great Mills |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2015-07-13 |
|
<< 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 >>
Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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