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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-606 A San Jose: West DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
415-343 A San Francisco: Central DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
415-365 A San Francisco: Central DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
415-450 A San Rafael CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
415-659 A San Francisco: Central DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
415-680 A San Francisco: Montrose-Evergreen DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
415-805 A San Francisco: Central DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
415-840 A San Francisco: Juniper DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
415-963 A San Francisco: Central DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-214 A Oakland: Alameda DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-269 A Oakland: Fruitvale DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-285 A Oakland: Main-Piedmont DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-404 A Fremont-Newark: Greenleaf DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-572 A Fremont-Newark: Oliver DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-731 A Hayward CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-771 A Fremont-Newark: Oliver DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-789 A Fremont-Newark: Main DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-877 A Oakland: Trinidad DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-955 A Oakland: Trinidad DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
510-982 A Oakland: Berkeley DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
628-218 A San Francisco: Central DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
628-263 A San Francisco: Central DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-214 A Mountain View CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-226 A San Carlos-Belmont CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-238 A South San Francisco CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-253 A Mountain View CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-263 A Moss Beach CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-379 A South San Francisco CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-427 A Palo Alto CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-429 A Mountain View CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-481 A Redwood City CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-651 A Millbrae CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-653 A San Mateo CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
650-687 A Palo Alto CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
669-223 A San Jose: West DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
669-282 A Campbell CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
669-287 A San Jose: West DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
669-544 A San Jose: North DA CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
707-244 A St Helena CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
707-430 A Fairfield-Suisun CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
707-536 A Santa Rosa CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
707-561 A Vallejo CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
707-690 A Napa CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
925-255 A Orinda CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
925-298 A Lafayette CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
925-364 A Dublin-San Ramon CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
925-499 A Concord CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
925-557 A Dublin-San Ramon CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
925-826 A Concord CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      
925-854 A Danville CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 722      

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Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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