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: SNDGCA0242Z

<< 1 2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
858-860 5 San Diego: Mira Mesa DA CA 516C AT&T CORP. 732   2011-04-06   
858-886 7 La Jolla CA 516C AT&T CORP. 732   2010-04-06   
858-914 9 Rancho Santa Fe CA 516C AT&T CORP. 732   2016-09-30   
858-925 7 Del Mar CA 516C AT&T CORP. 732   2006-06-30   
858-987 0 San Diego: Linda Vista DA CA 516C AT&T CORP. 732   2015-05-15   

<< 1 2

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.