Local Calling Guide

Area code/prefix search

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-607 7 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-05-23   
240-607 8 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-05-23   
240-619 7 Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-07-29   
240-620 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-620 0 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-621 3 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-10-23   
240-644 A Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-644 0 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-644 1 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-644 6 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 A Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 0 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 1 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-645 4 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-652 A Mechanicsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-652 1 Mechanicsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-652 4 Mechanicsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-652 5 Mechanicsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-652 6 Mechanicsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-652 9 Mechanicsville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-668 2 Damascus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-11-24   
240-668 3 Damascus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-11-24   
240-668 9 Damascus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-11-24   
240-705 7 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-08-22   
240-709 3 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2020-04-10   
240-718 A Lexington Park-Great Mills MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-718 1 Lexington Park-Great Mills MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-718 3 Lexington Park-Great Mills MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-718 7 Lexington Park-Great Mills MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-720 6 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-11-01   
240-745 A Damascus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-745 0 Damascus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-745 3 Damascus MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-764 A Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-764 0 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-764 1 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-764 2 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-764 3 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-765 A Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-765 0 Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-765 1 Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-765 6 Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-766 A Washington Zone 6 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-766 0 Washington Zone 6 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-766 1 Washington Zone 6 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-766 3 Washington Zone 6 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-776 1 La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-02   
240-778 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-778 0 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-778 1 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-778 2 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-800 2 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-08-27   
240-813 7 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2009-12-22   
240-823 A Brandywine MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-823 1 Brandywine MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-14   
240-823 2 Brandywine MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-14   
240-823 6 Brandywine MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-823 9 Brandywine MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-14   
240-833 A Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-833 0 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-833 1 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-833 4 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-837 A Hughesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-837 0 Hughesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-837 1 Hughesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-05-21   
240-837 7 Hughesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-845 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-845 0 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-845 1 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-845 5 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 A Washington Zone 16 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 0 Washington Zone 16 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 1 Washington Zone 16 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 6 Washington Zone 16 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-948 2 Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2022-12-05   
240-948 3 Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2022-12-05   
240-948 4 Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2022-12-05   
240-948 5 Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2022-12-05   
240-966 2 Washington Zone 16 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2022-07-19   
240-966 3 Washington Zone 16 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2022-07-19   
240-966 7 Washington Zone 16 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-06-15   
240-993 A Indian Head MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-993 0 Indian Head MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-993 2 Indian Head MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-993 3 Indian Head MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-993 5 Indian Head MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-993 8 Indian Head MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
301-232 A Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-232 9 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-240 3 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-244 0 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-11-08   
301-250 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-250 2 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-250 4 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-250 7 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-12-30   
301-250 9 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-256 A Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-256 3 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-256 9 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-263 6 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   

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Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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