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: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-681 A Palo Alto CA SNFCCAMMDSA  4129 O1 COMMUNICATIONS, INC. - CA 722      
650-681 0 Palo Alto CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-06-25   
650-681 1 Palo Alto CA   4129 O1 COMMUNICATIONS, INC. - CA 722      
650-681 2 Palo Alto CA   4129 O1 COMMUNICATIONS, INC. - CA 722      
650-681 3 Palo Alto CA   7453 U.S. TELEPACIFIC CORP. - CA 722   2010-03-08   
650-681 4 Palo Alto CA   4129 O1 COMMUNICATIONS, INC. - CA 722      
650-681 5 Palo Alto CA   7453 U.S. TELEPACIFIC CORP. - CA 722   2009-10-11   
650-681 6 Palo Alto CA   7453 U.S. TELEPACIFIC CORP. - CA 722   2009-10-11   
650-681 7 Palo Alto CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2010-06-24   
650-681 8 Palo Alto CA   649C ONVOY, LLC - CA 722   2008-06-22   
650-681 9 Palo Alto CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-02-20   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.