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: SNDGCA0269Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
760-201 1 Vista CA 506J TWILIO INTERNATIONAL, INC. 732      
858-310 A Rancho Santa Fe CA 506J TWILIO INTERNATIONAL, INC. 732      
858-310 3 Rancho Santa Fe CA 506J TWILIO INTERNATIONAL, INC. 732   2021-07-17   

Last updated: Sun, 06 Oct 2024 02:51:32 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.