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: FRFXVAFFPS1

Remotes:

Switch Switch name Switch type
ALXNVACNRP0    RP 
FLCHVAMFRP0    RP 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
571-490 A Washington Zone 19 VA 9213 VERIZON VIRGINIA, INC. 236      
571-490 9 Washington Zone 19 VA 9213 VERIZON VIRGINIA, INC. 236   2007-03-25   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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