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 |
| 240-688
| 2 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-09-13 |
|
| 240-688
| 3 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-09-12 |
|
| 240-688
| 4 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-09-12 |
|
| 240-688
| 5 |
Washington Zone 3 |
MD |
BTVLMD12CMA |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2006-10-08 |
|
| 240-688
| 6 |
Washington Zone 3 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-11-02 |
|
| 240-688
| 7 |
Washington Zone 3 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-10-02 |
|
| 240-688
| 8 |
Washington Zone 3 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-10-02 |
|
| 240-688
| 9 |
Washington Zone 3 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-10-02 |
|
| 240-689
| A |
Washington Zone 15 |
MD |
VINNVACBX0X |
425J CSC WIRELESS, LLC |
236 |
|
|
|
| 240-689
| 0 |
Washington Zone 15 |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2020-05-20 |
|
| 240-689
| 1 |
Washington Zone 15 |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2020-05-20 |
|
| 240-689
| 2 |
Washington Zone 15 |
MD |
VINNVACBX0X |
425J CSC WIRELESS, LLC |
236 |
|
2019-07-19 |
|
| 240-689
| 3 |
Washington Zone 15 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2021-12-23 |
|
| 240-689
| 4 |
Washington Zone 15 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2021-12-23 |
|
| 240-689
| 5 |
Washington Zone 15 |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2021-12-23 |
|
| 240-689
| 6 |
Washington Zone 15 |
MD |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2022-01-16 |
|
| 240-689
| 7 |
Washington Zone 15 |
MD |
BTVLMD12CMA |
5562 METROPCS, INC. |
236 |
|
2021-12-13 |
|
| 240-689
| 8 |
Washington Zone 15 |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2025-03-09 |
|
| 240-689
| 9 |
Washington Zone 15 |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2026-03-19 |
|
| 240-690
| A |
Gaithersburg |
MD |
WASHDCDTDS1 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
|
|
| 240-690
| 0 |
Gaithersburg |
MD |
WASHDC127MD |
073H TELNYX LLC |
236 |
|
2017-03-14 |
|
| 240-690
| 1 |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2017-01-25 |
|
| 240-690
| 2 |
Gaithersburg |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2018-06-14 |
|
| 240-690
| 3 |
Gaithersburg |
MD |
WASHDCDTDS1 |
7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC |
236 |
|
2017-01-09 |
|
| 240-690
| 4 |
Gaithersburg |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2017-03-10 |
|
| 240-690
| 5 |
Gaithersburg |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2017-12-15 |
|
| 240-690
| 6 |
Gaithersburg |
MD |
VINNVACBDS0 |
876D ONVOY, LLC - MD |
236 |
|
2017-12-15 |
|
| 240-690
| 7 |
Gaithersburg |
MD |
WASHDCINDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2019-05-27 |
|
| 240-690
| 8 |
Gaithersburg |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2025-10-12 |
|
| 240-690
| 9 |
Gaithersburg |
MD |
WASHDC125MD |
197D VONAGE AMERICA LLC |
236 |
|
2018-12-24 |
|
| 240-691
| A |
Washington Zone 5 |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-691
| 0 |
Washington Zone 5 |
MD |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-12-05 |
|
| 240-691
| 1 |
Washington Zone 5 |
MD |
WASHDCDP8MD |
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2024-10-19 |
|
| 240-691
| 2 |
Washington Zone 5 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2007-05-16 |
|
| 240-691
| 3 |
Washington Zone 5 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2007-05-16 |
|
| 240-691
| 4 |
Washington Zone 5 |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-691
| 5 |
Washington Zone 5 |
MD |
WASHDCSWMMD |
624H ONVOY SPECTRUM, LLC |
236 |
|
2024-12-05 |
|
| 240-691
| 6 |
Washington Zone 5 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2007-12-14 |
|
| 240-691
| 7 |
Washington Zone 5 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2007-12-14 |
|
| 240-691
| 8 |
Washington Zone 5 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2008-09-15 |
|
| 240-691
| 9 |
Washington Zone 5 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2007-02-15 |
|
| 240-692
| A |
Grantsville |
MD |
FRDRMDFRXMD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
|
|
| 240-692
| 0 |
Grantsville |
MD |
CMLDMDCMUMD |
073H TELNYX LLC |
240 |
|
2021-03-04 |
|
| 240-692
| 1 |
Grantsville |
MD |
FRDRMDFRXMD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2019-07-21 |
|
| 240-692
| 2 |
Grantsville |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2020-01-06 |
|
| 240-692
| 3 |
Grantsville |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2020-01-06 |
|
| 240-692
| 4 |
Grantsville |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2021-03-04 |
|
| 240-692
| 5 |
Grantsville |
MD |
FRDRMDFRXPX |
624H ONVOY SPECTRUM, LLC |
240 |
|
2021-05-24 |
|
| 240-692
| 6 |
Grantsville |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2023-06-16 |
|
| 240-692
| 7 |
Grantsville |
MD |
FRDRMDFRXPX |
624H ONVOY SPECTRUM, LLC |
240 |
|
2021-11-15 |
|
<< 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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