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: LNBHCAXSDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
562-377 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-420 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-421 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-425 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-429 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-496 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-497 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-627 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-938 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      
562-982 A Lakewood CA 2319 FRONTIER CALIFORNIA INC. 730      

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

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