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: SCRMCA0121Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
279-218 A Sacramento: North DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
279-229 A Sacramento: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
530-402 A Woodland CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
530-607 A Wheatland CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
530-617 A Live Oak CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
530-650 A Woodland CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
530-760 A Davis CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
530-808 A Davis CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
530-834 A Grass Valley: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-273 A Sacramento: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-365 A Folsom CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-418 A Sacramento: North DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-436 A Fair Oaks (Sacramento) CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-437 A Sacramento: North DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-438 A Sacramento: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-504 A Sacramento: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-609 A Sacramento: North DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-642 A Sacramento: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-753 A Elk Grove CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-831 A Elk Grove CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-842 A Sacramento: Main DA CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      
916-903 A Fair Oaks (Sacramento) CA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.