Local Calling Guide

Area code/prefix search

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
571-392 9 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-02-09   
571-397 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2020-10-14   
571-401 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-401 2 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2018-12-30   
571-401 3 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2018-12-30   
571-401 4 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2018-12-30   
571-401 5 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2018-12-30   
571-401 6 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2018-12-30   
571-403 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-06-16   
571-403 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-03-28   
571-409 5 Occoquan VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-17   
571-414 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-414 2 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-10-16   
571-414 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-10-16   
571-414 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-10-16   
571-414 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-10-20   
571-414 6 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-10-13   
571-419 5 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-09-07   
571-427 3 Occoquan VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-06-15   
571-443 2 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2018-01-15   
571-448 A Engleside VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-457 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-10-05   
571-457 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-10-05   
571-457 7 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2017-10-05   
571-467 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2020-07-04   
571-467 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2020-07-04   
571-467 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2020-07-04   
571-472 A Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-473 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2021-02-24   
571-480 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-01-23   
571-482 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-10-25   
571-482 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-01-27   
571-482 6 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-01-27   
571-487 A Arcola VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-487 9 Arcola VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-10-01   
571-490 8 Washington Zone 19 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-07-17   
571-499 4 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2009-08-21   
571-499 5 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2009-08-21   
571-499 6 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2009-08-21   
571-523 2 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2018-08-14   
571-526 3 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2013-10-08   
571-533 A Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-533 1 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-02-19   
571-533 3 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-05-02   
571-537 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-537 0 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-537 1 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-537 2 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-537 3 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-537 4 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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