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 |
| 240-652
| 7 |
Mechanicsville |
MD |
WASHDC12DS6 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
236 |
|
2013-10-26 |
|
| 240-652
| 8 |
Mechanicsville |
MD |
WASHDC12KMD |
145J TERRA NOVA TELECOM INC. |
236 |
|
2024-07-16 |
|
| 240-652
| 9 |
Mechanicsville |
MD |
WASKDCFNPS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
236 |
|
2005-08-15 |
|
| 240-653
| A |
Laurel (Baltimore LATA) |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
|
|
| 240-653
| 0 |
Laurel (Baltimore LATA) |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2019-07-18 |
|
| 240-653
| 1 |
Laurel (Baltimore LATA) |
MD |
BLTMMDCH40Z |
6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
238 |
|
2021-10-10 |
|
| 240-653
| 2 |
Laurel (Baltimore LATA) |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2022-07-08 |
|
| 240-653
| 3 |
Laurel (Baltimore LATA) |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2020-03-18 |
|
| 240-653
| 5 |
Laurel (Baltimore LATA) |
MD |
BLTQMD01DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
238 |
|
2018-11-18 |
|
| 240-653
| 6 |
Laurel (Baltimore LATA) |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2020-11-08 |
|
| 240-653
| 7 |
Laurel (Baltimore LATA) |
MD |
BLTOMDKHBMD |
6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
238 |
|
2020-12-17 |
|
| 240-653
| 8 |
Laurel (Baltimore LATA) |
MD |
BLTMMDCHX7X |
073H TELNYX LLC |
238 |
|
2019-09-27 |
|
| 240-653
| 9 |
Laurel (Baltimore LATA) |
MD |
BLTMMDCH45Z |
071F BANDWIDTH.COM CLEC, LLC - MD |
238 |
|
2020-12-04 |
|
| 240-654
| A |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
|
|
| 240-654
| 0 |
Gaithersburg |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2008-05-15 |
|
| 240-654
| 1 |
Gaithersburg |
MD |
MCLNVA23DS4 |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
236 |
|
2008-05-15 |
|
| 240-654
| 2 |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2006-07-10 |
|
| 240-654
| 3 |
Gaithersburg |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2008-03-28 |
|
| 240-654
| 4 |
Gaithersburg |
MD |
ARTNVAARXDY |
318J COMCAST IP PHONE, LLC |
236 |
|
2008-03-28 |
|
| 240-654
| 5 |
Gaithersburg |
MD |
WASLDCRGDS0 |
281E YMAX COMMUNICATIONS CORP. - MD |
236 |
|
2009-07-24 |
|
| 240-654
| 6 |
Gaithersburg |
MD |
WASLDCRGDS0 |
281E YMAX COMMUNICATIONS CORP. - MD |
236 |
|
2009-07-24 |
|
| 240-654
| 7 |
Gaithersburg |
MD |
BTVLMD18GT0 |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
236 |
|
2008-07-17 |
|
| 240-654
| 8 |
Gaithersburg |
MD |
WASLDCRGDS0 |
281E YMAX COMMUNICATIONS CORP. - MD |
236 |
|
2008-08-08 |
|
| 240-654
| 9 |
Gaithersburg |
MD |
WASLDCRGDS0 |
281E YMAX COMMUNICATIONS CORP. - MD |
236 |
|
2008-08-08 |
|
| 240-655
| A |
Kitzmiller |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
|
|
| 240-655
| 0 |
Kitzmiller |
MD |
HGTWMD530MD |
073H TELNYX LLC |
240 |
|
2018-05-01 |
|
| 240-655
| 1 |
Kitzmiller |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-655
| 2 |
Kitzmiller |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-655
| 3 |
Kitzmiller |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2018-06-17 |
|
| 240-655
| 4 |
Kitzmiller |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2019-07-31 |
|
| 240-655
| 5 |
Kitzmiller |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2018-02-16 |
|
| 240-655
| 6 |
Kitzmiller |
MD |
|
2593 CORE COMMUNICATIONS, INC.- MD |
240 |
|
2019-07-31 |
|
| 240-655
| 7 |
Kitzmiller |
MD |
FRDRMDFRXMD |
6119 LEVEL 3 COMMUNICATIONS, LLC - MD |
240 |
|
2019-09-15 |
|
| 240-655
| 8 |
Kitzmiller |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2020-01-06 |
|
| 240-655
| 9 |
Kitzmiller |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2020-01-06 |
|
| 240-656
| A |
Frederick |
MD |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
|
|
| 240-656
| 0 |
Frederick |
MD |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2021-02-22 |
|
| 240-656
| 1 |
Frederick |
MD |
FRDRMDFRXTX |
318J COMCAST IP PHONE, LLC |
240 |
|
2021-03-14 |
|
| 240-656
| 2 |
Frederick |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2020-01-05 |
|
| 240-656
| 3 |
Frederick |
MD |
CMLDMDCMEMD |
876D ONVOY, LLC - MD |
240 |
|
2020-01-05 |
|
| 240-656
| 4 |
Frederick |
MD |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2020-07-10 |
|
| 240-656
| 5 |
Frederick |
MD |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2020-10-24 |
|
| 240-656
| 6 |
Frederick |
MD |
HGTWMD53DS0 |
568G PEERLESS NETWORK OF MARYLAND, LLC |
240 |
|
2020-10-28 |
|
| 240-656
| 7 |
Frederick |
MD |
FRDRMDFRKMD |
5562 METROPCS, INC. |
240 |
|
2020-10-25 |
|
| 240-656
| 8 |
Frederick |
MD |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2019-11-01 |
|
| 240-656
| 9 |
Frederick |
MD |
MNRVMDMOXFX |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
240 |
|
2019-11-01 |
|
| 240-657
| A |
Frostburg |
MD |
FRDRMDFRX7X |
7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
240 |
|
|
|
| 240-657
| 0 |
Frostburg |
MD |
HGTWMDHGDMD |
071F BANDWIDTH.COM CLEC, LLC - MD |
240 |
|
2016-07-11 |
|
| 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 |
|
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Last updated: Sat, 02 May 2026 12:20:53 UTC
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