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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-648 A San Jose: West DA CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
408-657 A San Martin CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
408-740 A Saratoga CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
408-903 A San Jose: South DA CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-200 A San Francisco: Central DA CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-234 A Ignacio CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-300 A San Rafael CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-322 A Mill Valley CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-323 A Nicasio CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-326 A Mill Valley CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-484 A Stinson Beach-Bolinas CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-639 A Inverness CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-702 A San Francisco: Montrose-Evergreen DA CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-754 A Sausalito CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-938 A Point Reyes CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
415-952 A Stinson Beach-Bolinas CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
510-256 A Crockett CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
510-709 A Fremont-Newark: Main DA CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
510-830 A Oakland: Main-Piedmont DA CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
510-854 A El Sobrante-Pinole CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
510-931 A Hayward CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-200 A San Mateo CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-337 A Pescadero CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-397 A Los Altos CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-399 A Redwood City CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-446 A Woodside CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-662 A La Honda CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-681 A Palo Alto CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-835 A South San Francisco CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-889 A Half Moon Bay CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-900 A Los Altos CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
650-984 A Pacifica CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-243 A Occidental CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-271 A Point Arena CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-294 A Napa CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-300 A Boonville CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-341 A Calistoga CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-343 A Sonoma CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-400 A Benicia CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-401 A Cazadero CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-404 A Cloverdale CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-405 A Covelo CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-406 A Elk CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-409 A Fort Bragg CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-410 A Fairfield-Suisun CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-412 A Gualala CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-413 A Lakeport CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-414 A Laytonville CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-418 A Lake Berryessa CA 4129 O1 COMMUNICATIONS, INC. - CA 722      
707-419 A Fairfield-Suisun CA 4129 O1 COMMUNICATIONS, INC. - CA 722      

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Last updated: Mon, 24 May 2021 01:28:43 UTC

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