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: SNDGCA0261Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
442-204 7 Vista CA 321J HD CARRIER LLC 732   2016-06-11   
442-204 8 Vista CA 321J HD CARRIER LLC 732   2016-06-11   
442-204 9 Vista CA 321J HD CARRIER LLC 732   2016-06-11   
619-505 5 National City CA 321J HD CARRIER LLC 732   2016-06-09   
619-505 6 National City CA 321J HD CARRIER LLC 732   2016-06-09   
619-505 7 National City CA 321J HD CARRIER LLC 732   2016-06-09   
619-505 8 National City CA 321J HD CARRIER LLC 732   2016-06-09   
858-276 2 San Diego: Linda Vista DA CA 321J HD CARRIER LLC 732   2016-06-09   
858-276 3 San Diego: Linda Vista DA CA 321J HD CARRIER LLC 732   2016-06-09   
858-276 4 San Diego: Linda Vista DA CA 321J HD CARRIER LLC 732   2016-06-09   
858-276 5 San Diego: Linda Vista DA CA 321J HD CARRIER LLC 732   2016-06-09   
858-276 6 San Diego: Linda Vista DA CA 321J HD CARRIER LLC 732   2016-06-09   
858-868 A San Diego: San Diego DA CA 321J HD CARRIER LLC 732      
858-868 9 San Diego: San Diego DA CA 321J HD CARRIER LLC 732   2019-02-09   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.