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: SKTNCASL5MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
350-207 A Modesto CA 732J NUSO, LLC 738      
350-207 4 Modesto CA 732J NUSO, LLC 738   2023-10-06   
350-220 1 Modesto CA 732J NUSO, LLC 738   2024-05-19   
350-220 2 Modesto CA 732J NUSO, LLC 738   2024-05-19   
350-230 0 Modesto CA 732J NUSO, LLC 738   2024-10-22   
350-230 1 Modesto CA 732J NUSO, LLC 738   2024-10-22   
350-230 8 Modesto CA 732J NUSO, LLC 738   2024-10-22   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.