Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-296 4 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-296 5 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-296 7 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-296 8 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-296 9 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-337 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-337 2 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-348 A Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-348 1 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-348 3 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-364 A Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-364 1 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-426 6 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-479 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-479 1 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-479 3 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-500 1 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-05-13   
301-500 3 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-05-13   
301-679 2 Washington Zone 12 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-12-31   
301-686 3 Washington Zone 6 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-10-01   
301-686 8 Washington Zone 6 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2009-08-28   
301-755 A Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-755 0 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-755 1 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-755 2 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-761 6 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2014-11-22   
301-761 7 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2014-10-23   
301-769 5 Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
301-769 6 Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
301-778 A Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-778 1 Washington Zone 5 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-822 A Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-851 7 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-861 2 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-08-01   
301-866 7 Lexington Park-Great Mills MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-887 2 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 A Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 0 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 1 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 2 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 4 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-968 9 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-979 4 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-518 7 Columbia MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2010-04-08   
443-753 A Waterloo (Washington DC LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-753 0 Waterloo (Washington DC LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-753 1 Waterloo (Washington DC LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-753 4 Waterloo (Washington DC LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-753 5 Waterloo (Washington DC LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
443-753 6 Waterloo (Washington DC LATA) MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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