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.

NPA: 571 [Rate centres in NPA 571] [Dial plan for NPA 571]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-454 A Manassas VA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-10-25   
571-454 0 Manassas VA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-10-25   
571-454 1 Manassas VA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-10-25   
571-454 2 Manassas VA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-10-25   
571-454 3 Manassas VA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-10-25   
571-454 4 Manassas VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2019-11-15   
571-454 5 Manassas VA   138E ONVOY, LLC VA 236   2020-07-29   
571-454 6 Manassas VA   275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 236   2020-03-04   
571-454 7 Manassas VA   138E ONVOY, LLC VA 236   2020-03-29   
571-454 8 Manassas VA   138E ONVOY, LLC VA 236   2020-07-29   
571-454 9 Manassas VA   138E ONVOY, LLC VA 236   2020-07-29   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.