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: SNJSCARMDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-215 A Sunnyvale CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
408-216 A San Jose: West DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
408-273 A San Jose: North DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
408-424 A San Jose: North DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
408-490 A San Jose: West DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
408-620 A San Jose: South DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722   2011-10-29   
408-856 A San Jose: North DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
408-990 A Sunnyvale CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
831-337 A Boulder Creek CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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