Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: WASKDCFNPS0

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
571-610 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 6 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 7 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 8 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-610 9 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-612 2 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-17   
571-612 3 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-17   
571-612 6 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-01-11   
571-612 7 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-01-25   
571-613 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-613 0 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 1 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 2 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 6 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 7 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 8 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-613 9 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 A Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-614 0 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 1 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 2 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 3 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 4 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 6 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 7 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 8 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-614 9 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-03-20   
571-623 3 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-11-05   
571-635 1 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-05-14   
571-635 4 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-12-23   
571-644 A Engleside VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-646 3 Engleside VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2021-09-09   
571-659 6 Dale City VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-09-28   
571-665 A Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-665 3 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-04-24   
571-665 6 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-06-12   
571-665 7 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-06-12   
571-730 1 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-04-11   
571-730 2 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-04-11   
571-733 5 Washington Zone 8 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-03-26   
571-765 7 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-06-28   
571-766 1 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-01-07   
571-766 2 Washington Zone 17 VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-01-07   
571-776 0 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-08-31   
571-776 1 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-08-31   
571-776 2 Herndon VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-08-31   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 >>

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.