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.
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Switch: SNJUCACL8MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
341-230 7 Richmond CA 145J TERRA NOVA TELECOM INC. 722   2026-03-28   
341-232 5 Hayward CA 145J TERRA NOVA TELECOM INC. 722   2026-04-30   
369-242 2 Middletown CA 145J TERRA NOVA TELECOM INC. 722   2026-06-15   
369-333 4 Loleta CA 145J TERRA NOVA TELECOM INC. 722   2026-02-18   
408-940 7 Sunnyvale CA 145J TERRA NOVA TELECOM INC. 722   2026-01-04   
415-419 0 San Rafael CA 145J TERRA NOVA TELECOM INC. 722   2026-03-28   
510-592 0 Hercules-Rodeo CA 145J TERRA NOVA TELECOM INC. 722   2026-06-17   
628-261 A Sausalito CA 145J TERRA NOVA TELECOM INC. 722      
650-516 8 Pacifica CA 145J TERRA NOVA TELECOM INC. 722   2026-03-13   
650-689 9 Millbrae CA 145J TERRA NOVA TELECOM INC. 722   2026-03-13   
650-847 6 Palo Alto CA 145J TERRA NOVA TELECOM INC. 722   2026-06-05   
707-248 4 Piercy CA 145J TERRA NOVA TELECOM INC. 722   2026-06-05   
707-307 0 Napa CA 145J TERRA NOVA TELECOM INC. 722   2026-06-17   
707-312 9 Yountville CA 145J TERRA NOVA TELECOM INC. 722   2026-06-17   
707-482 2 Klamath CA 145J TERRA NOVA TELECOM INC. 722   2026-01-04   
707-488 3 Orick CA 145J TERRA NOVA TELECOM INC. 722   2026-02-05   
707-656 0 Vallejo CA 145J TERRA NOVA TELECOM INC. 722   2026-03-28   
707-872 2 Occidental CA 145J TERRA NOVA TELECOM INC. 722   2026-04-07   
831-274 9 Watsonville CA 145J TERRA NOVA TELECOM INC. 722   2026-06-17   
831-612 8 Aptos CA 145J TERRA NOVA TELECOM INC. 722   2026-06-17   
925-320 2 Moraga CA 145J TERRA NOVA TELECOM INC. 722   2026-06-04   
925-540 0 Danville CA 145J TERRA NOVA TELECOM INC. 722   2026-05-01   
925-726 0 Concord CA 145J TERRA NOVA TELECOM INC. 722   2026-04-30   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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