Local Calling Guide

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
571-537 5 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-537 6 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-537 7 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-537 8 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-537 9 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-539 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-539 0 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-539 1 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-539 2 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-539 3 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-21   
571-539 4 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-12-22   
571-539 5 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2020-09-27   
571-539 6 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2020-09-27   
571-551 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-551 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2013-07-07   
571-551 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2013-07-07   
571-551 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2013-09-29   
571-557 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-558 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-581 A Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-581 3 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-06-07   
571-588 A Engleside VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-607 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-607 0 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 1 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 2 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 6 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 7 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 8 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-607 9 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-608 0 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 1 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 2 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 6 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 7 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 8 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-608 9 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-610 0 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 1 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 2 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   

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

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