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: 408 [Rate centres in NPA 408] [Dial plan for NPA 408]

NXX: 387

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-387 A San Jose: West DA CA SNJSCA12DS0  9740 PACIFIC BELL 722      
408-387 0 San Jose: West DA CA OKLECAZVGT0  5562 METROPCS, INC. 722   2007-06-05   
408-387 1 San Jose: West DA CA SNJSCA12DS0  9740 PACIFIC BELL 722      
408-387 2 San Jose: West DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2004-11-28   
408-387 3 San Jose: West DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2005-02-04   
408-387 4 San Jose: West DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2004-05-22   
408-387 5 San Jose: West DA CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2002-12-17   
408-387 6 San Jose: West DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-03-03   
408-387 7 San Jose: West DA CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2020-10-12   
408-387 8 San Jose: West DA CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2002-12-17   
408-387 9 San Jose: West DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2005-09-01   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.