Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-740 3 Washington Zone 10 MD   361H ATLANTECH ONLINE, INC. - MD 236   2015-11-01   
240-740 4 Washington Zone 10 MD   361H ATLANTECH ONLINE, INC. - MD 236   2015-11-01   
240-740 5 Washington Zone 10 MD   361H ATLANTECH ONLINE, INC. - MD 236   2015-11-01   
240-740 6 Washington Zone 10 MD   361H ATLANTECH ONLINE, INC. - MD 236   2015-11-01   
240-740 7 Washington Zone 10 MD   361H ATLANTECH ONLINE, INC. - MD 236   2015-11-01   
240-740 8 Washington Zone 10 MD   361H ATLANTECH ONLINE, INC. - MD 236   2015-11-01   
240-740 9 Washington Zone 10 MD   361H ATLANTECH ONLINE, INC. - MD 236   2015-11-01   
240-741 A Frederick MD CMLDMDCMYMD  996H AIRESPRING INC 240      
240-741 0 Frederick MD   996H AIRESPRING INC 240   2020-11-15   
240-741 1 Frederick MD   5562 METRO PCS, INC. 240   2021-04-22   
240-741 5 Frederick MD   624H ONVOY SPECTRUM, LLC 240   2021-02-23   
240-741 6 Frederick MD   624H ONVOY SPECTRUM, LLC 240   2021-02-23   
240-741 7 Frederick MD   624H ONVOY SPECTRUM, LLC 240   2021-02-23   
240-741 8 Frederick MD   624H ONVOY SPECTRUM, LLC 240   2021-02-23   
240-741 9 Frederick MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 240   2021-04-08   
240-742 A Washington Zone 14 (Baltimore LATA) MD ARTNVAARXGY  478J BRIGHTLINK COMMUNICATIONS LLC 238   2021-01-21   
240-742 1 Washington Zone 14 (Baltimore LATA) MD   478J BRIGHTLINK COMMUNICATIONS LLC 238   2021-01-21   
240-742 2 Washington Zone 14 (Baltimore LATA) MD   876D ONVOY, LLC - MD 238   2021-03-04   
240-742 4 Washington Zone 14 (Baltimore LATA) MD   566J RADIANTIQ LLC 238   2021-05-07   
240-742 7 Washington Zone 14 (Baltimore LATA) MD   506J TWILIO INTERNATIONAL INC 238   2021-01-23   
240-743 A Washington Zone 2 MD SLSPMD912MD  082H LOCAL ACCESS LLC - MD 236      
240-743 0 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2015-08-09   
240-743 1 Washington Zone 2 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2014-07-01   
240-743 2 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2014-05-11   
240-743 3 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-08-27   
240-743 4 Washington Zone 2 MD   318J COMCAST IP PHONE LLC 236   2007-09-20   
240-743 5 Washington Zone 2 MD   082H LOCAL ACCESS LLC - MD 236   2007-09-13   
240-743 6 Washington Zone 2 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-10-09   
240-743 7 Washington Zone 2 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-09-17   
240-743 8 Washington Zone 2 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-09-17   
240-743 9 Washington Zone 2 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-09-17   
240-744 A Washington Zone 2 MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-744 0 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-744 1 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-744 2 Washington Zone 2 MD   6664 SPRINT SPECTRUM L.P. 236   2005-07-02   
240-744 3 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-744 4 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-744 5 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-744 6 Washington Zone 2 MD   6664 SPRINT SPECTRUM L.P. 236   2005-11-21   
240-744 7 Washington Zone 2 MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-745 A Damascus MD WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-745 0 Damascus MD   4773 XO MARYLAND, LLC 236      
240-745 1 Damascus MD   2589 US LEC OF MARYLAND, INC. 236   2004-02-05   
240-745 2 Damascus MD   318J COMCAST IP PHONE LLC 236   2013-05-30   
240-745 3 Damascus MD   4773 XO MARYLAND, LLC 236      
240-745 4 Damascus MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-16   
240-745 5 Damascus MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
240-745 6 Damascus MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-08-10   
240-745 7 Damascus MD   876D ONVOY, LLC - MD 236   2015-06-27   
240-745 8 Damascus MD   082H LOCAL ACCESS LLC - MD 236   2015-03-21   

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

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