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: LTWLNV13RS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
775-372 A Lathrop Wells NV 9742 NEVADA BELL 721      
775-372 1 Lathrop Wells NV 9742 NEVADA BELL 721      
775-372 5 Lathrop Wells NV 9742 NEVADA BELL 721      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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