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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-775 8 Westernport MD   073H TELNYX LLC 240   2017-08-08   
240-775 9 Westernport MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2019-06-21   
240-776 A La Plata MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-776 0 La Plata MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-776 1 La Plata MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-776 2 La Plata MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
240-776 3 La Plata MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-776 4 La Plata MD   318J COMCAST IP PHONE LLC 236   2007-09-20   
240-776 5 La Plata MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-08-15   
240-776 6 La Plata MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-08-01   
240-776 7 La Plata MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-776 8 La Plata MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2008-05-16   
240-776 9 La Plata MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-777 A Washington Zone 10 MD RKVLMDRVDS1  9212 VERIZON MARYLAND, INC. 236      
240-778 A Washington Zone 10 MD WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-778 0 Washington Zone 10 MD   4773 XO MARYLAND, LLC 236      
240-778 1 Washington Zone 10 MD   4773 XO MARYLAND, LLC 236      
240-778 2 Washington Zone 10 MD   4773 XO MARYLAND, LLC 236      
240-778 3 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-778 4 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-778 5 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-778 6 Washington Zone 10 MD   087F FUSION COMMUNICATIONS, LLC 236   2008-10-05   
240-778 7 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-07-17   
240-778 8 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-778 9 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
240-779 A Ashton MD WASJDCDBDS1  4820 CAVALIER EAST LLC - MD 236      
240-779 0 Ashton MD   4820 CAVALIER EAST LLC - MD 236      
240-779 1 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-10-27   
240-779 2 Ashton MD   4820 CAVALIER EAST LLC - MD 236      
240-779 3 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-10-27   
240-779 4 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-10-27   
240-779 5 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-07-22   
240-779 6 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-07-22   
240-779 7 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2014-03-23   
240-779 8 Ashton MD   4820 CAVALIER EAST LLC - MD 236      
240-779 9 Ashton MD   4820 CAVALIER EAST LLC - MD 236      
240-780 A Gaithersburg MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 0 Gaithersburg MD   082H LOCAL ACCESS LLC - MD 236   2013-09-07   
240-780 1 Gaithersburg MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-14   
240-780 2 Gaithersburg MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-11-29   
240-780 3 Gaithersburg MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 4 Gaithersburg MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 5 Gaithersburg MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-780 6 Gaithersburg MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2009-06-14   
240-780 7 Gaithersburg MD   318J COMCAST IP PHONE LLC 236   2012-10-07   
240-780 8 Gaithersburg MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-19   
240-780 9 Gaithersburg MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-781 A Washington Zone 2 MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-781 0 Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-14   
240-781 1 Washington Zone 2 MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-14   

<< 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 >>

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.