Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-357 3 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2007-12-14   
240-357 4 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2006-11-02   
240-357 5 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2007-06-01   
240-357 6 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2007-06-01   
240-357 7 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2007-07-02   
240-357 8 Frederick MD FRDRMDFRXSX  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2008-02-14   
240-357 9 Frederick MD MNRVMDMOXFX  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2021-10-17   
240-358 A Damascus MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-358 0 Damascus MD WASHDC127MD  073H TELNYX LLC 236   2019-12-01   
240-358 1 Damascus MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2022-09-22   
240-358 2 Damascus MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-04-25   
240-358 3 Damascus MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-07-12   
240-358 4 Damascus MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-12-11   
240-358 5 Damascus MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-358 6 Damascus MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-12-11   
240-358 7 Damascus MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-358 8 Damascus MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-358 9 Damascus MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-359 A Indian Head MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-359 0 Indian Head MD   876D ONVOY, LLC - MD 236   2024-03-14   
240-359 1 Indian Head MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2023-08-19   
240-359 2 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-02-20   
240-359 3 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-07-12   
240-359 6 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-11-27   
240-359 7 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-11-27   
240-359 8 Indian Head MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-12-23   
240-359 9 Indian Head MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-360 A Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
240-360 0 Laurel MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-03-31   
240-360 1 Laurel MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-03-31   
240-360 2 Laurel MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-10-20   
240-360 3 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-03-23   
240-360 4 Laurel MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-06-23   
240-360 5 Laurel MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2015-10-13   
240-360 6 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-09-21   
240-360 7 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-09-21   
240-360 8 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-11-15   
240-360 9 Laurel MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-11-15   
240-361 A Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-361 0 Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-361 1 Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-361 2 Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-361 3 Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-361 4 Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-361 5 Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-361 6 Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-361 7 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-01-28   
240-361 8 Gaithersburg MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-01-28   
240-361 9 Gaithersburg MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-362 A Cumberland MD CSTWMDCRDS0  9212 VERIZON MARYLAND, INC. 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 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.