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 |
| 240-718
| 7 |
Lexington Park-Great Mills |
MD |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
|
|
| 240-718
| 8 |
Lexington Park-Great Mills |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2011-02-26 |
|
| 240-719
| A |
Washington Zone 5 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 240-719
| 0 |
Washington Zone 5 |
MD |
|
073H TELNYX LLC |
236 |
|
2017-03-14 |
|
| 240-719
| 1 |
Washington Zone 5 |
MD |
|
5562 METROPCS, INC. |
236 |
|
2016-12-12 |
|
| 240-719
| 2 |
Washington Zone 5 |
MD |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2016-07-13 |
|
| 240-719
| 3 |
Washington Zone 5 |
MD |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2016-12-15 |
|
| 240-719
| 4 |
Washington Zone 5 |
MD |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2017-07-05 |
|
| 240-719
| 5 |
Washington Zone 5 |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2018-01-18 |
|
| 240-719
| 6 |
Washington Zone 5 |
MD |
|
876D ONVOY, LLC - MD |
236 |
|
2018-01-18 |
|
| 240-719
| 7 |
Washington Zone 5 |
MD |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2017-04-14 |
|
| 240-719
| 8 |
Washington Zone 5 |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2016-12-09 |
|
| 240-719
| 9 |
Washington Zone 5 |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2016-06-10 |
|
| 240-720
| A |
Gaithersburg |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-720
| 0 |
Gaithersburg |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-720
| 1 |
Gaithersburg |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-05-31 |
|
| 240-720
| 2 |
Gaithersburg |
MD |
|
515J IP HORIZON LLC |
236 |
|
2007-09-13 |
|
| 240-720
| 3 |
Gaithersburg |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2007-12-04 |
|
| 240-720
| 4 |
Gaithersburg |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-05-31 |
|
| 240-720
| 5 |
Gaithersburg |
MD |
|
281E YMAX COMMUNICATIONS CORP. - MD |
236 |
|
2008-04-16 |
|
| 240-720
| 6 |
Gaithersburg |
MD |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2008-11-01 |
|
| 240-720
| 7 |
Gaithersburg |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2010-10-28 |
|
| 240-720
| 8 |
Gaithersburg |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-720
| 9 |
Gaithersburg |
MD |
|
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
|
|
| 240-721
| A |
Washington Zone 5 |
MD |
STLDMDSLDS0 |
9212 VERIZON MARYLAND, INC. |
236 |
|
|
|
| 240-721
| 0 |
Washington Zone 5 |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2020-05-11 |
|
| 240-721
| 1 |
Washington Zone 5 |
MD |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2020-05-10 |
|
| 240-721
| 2 |
Washington Zone 5 |
MD |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2020-05-10 |
|
| 240-721
| 3 |
Washington Zone 5 |
MD |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2020-05-10 |
|
| 240-721
| 4 |
Washington Zone 5 |
MD |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2020-05-10 |
|
| 240-721
| 5 |
Washington Zone 5 |
MD |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2020-05-10 |
|
| 240-721
| 6 |
Washington Zone 5 |
MD |
|
9212 VERIZON MARYLAND, INC. |
236 |
|
2020-05-10 |
|
| 240-721
| 7 |
Washington Zone 5 |
MD |
|
939H COMMIO, LLC |
236 |
|
2021-09-16 |
|
| 240-721
| 8 |
Washington Zone 5 |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2020-05-11 |
|
| 240-721
| 9 |
Washington Zone 5 |
MD |
|
939H COMMIO, LLC |
236 |
|
2021-10-11 |
|
| 240-722
| A |
Ashton |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
|
|
| 240-722
| 0 |
Ashton |
MD |
|
145J TERRA NOVA TELECOM INC. |
236 |
|
2025-05-26 |
|
| 240-722
| 1 |
Ashton |
MD |
|
071F BANDWIDTH.COM CLEC, LLC - MD |
236 |
|
2012-11-25 |
|
| 240-722
| 2 |
Ashton |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2015-06-19 |
|
| 240-722
| 3 |
Ashton |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-05-12 |
|
| 240-722
| 4 |
Ashton |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2025-05-12 |
|
| 240-722
| 5 |
Ashton |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2021-03-06 |
|
| 240-722
| 6 |
Ashton |
MD |
|
318J COMCAST IP PHONE, LLC |
236 |
|
2014-08-21 |
|
| 240-722
| 7 |
Ashton |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2013-10-11 |
|
| 240-722
| 8 |
Ashton |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2013-10-11 |
|
| 240-722
| 9 |
Ashton |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2015-06-19 |
|
| 240-723
| A |
Washington Zone 3 |
MD |
WASKDCFNAMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
|
|
| 240-723
| 0 |
Washington Zone 3 |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2005-05-02 |
|
| 240-723
| 1 |
Washington Zone 3 |
MD |
|
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
236 |
|
2005-01-08 |
|
| 240-723
| 2 |
Washington Zone 3 |
MD |
|
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
236 |
|
2006-11-02 |
|
<< 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: Thu, 29 Jan 2026 14:35:03 UTC
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