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: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 599

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-599 A Livermore CA SNJUCACL7MD  965H FRACTEL, LLC 722      
925-599 3 Livermore CA SNFCCA21XPZ  553J WHITESKY COMMUNICATIONS, LLC 722   2021-09-16   
925-599 5 Livermore CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-11-19   
925-599 6 Livermore CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-11-19   
925-599 8 Livermore CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2023-11-25   
925-599 9 Livermore CA SNJUCACL7MD  965H FRACTEL, LLC 722   2021-03-27   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.