The 408 area code is a North American (California) code, covering San Jose, Santa Clara, Gilroy, Los Gatos, Saratoga, Sunnyvale, Morgan Hill, Cupertino, Monte Sereno and Milpitas. This area code was made in 1959 by splitting 415. As the population were growing and so as use of other communication means (pagers, fax machines and cell phones), it was necessary to split some area codes. In 1998, the 408 was split and the 831 was created to be used in Monterey, San Benito and Santa Cruz.
Places where 408 is used are: Coyote, Holy City, Alviso, Gilroy, Campbell, Milpitas, Monte Vista, Morgan Hill, Cupertino, Monte Sereno, Los Gatos, Permanente, Mount Hamilton, San
Jose, Redwood Estates, Saratoga, New Almaden, Santa Clara, Onizuka AFB, Sunnyvale and San Martin.
408 area code prefixes range from (408) 200 to (408) 999. There are nearly 618096 individuals and 374252 unique numbers covered by area code 408. There are 688 prefixes.
The 408 service providers are: Global Valley Networks, Level 3 Communications, LLC, Broadwing Communicatins LLC – Ca, Nextel Communications, Inc., Sprint Spectrum L.P, Pac – West Telecomm, Level 3 Communications, LLC – Ca, Pacific Bell, Network Services LLC, USA Mobility Wireless, Inc., At&t Local, Allegiance Telecom, Global Crossing Local Services, Inc.-Ca, Mpower Networks Services Inc. – Ca, North County Communications Corp. – Ca, Peerless Network Of California, LLC – Ca, Verizon California Inc.-Ca, Teleport Communications Group – San Francisco, The Telephone Connection Of Los Angeles, Inc., Comcast Phone Of California, LLC – Ca, Mpower Communications Corp – Ca, Cook Telecom, Inc., American Messaging, O1 Communications, Inc., Network Services LLC, U.S. Telepacific Corp. – Ca, New Cingular Wireless Pcs, Mci Worldcom Communications, Inc., Time Warner Telecom Of Califor, – Ca., Telecom Of California LP – Ca, T-mobile USA, Verizon California Inc.-Ca, Metro Pcs, Inc., Cellco Partnership DBA Verizon Wireless – Ca., Mcimetro Access Transmission Services, Charter Fiberlink, Digitcom Services, Inc., Pacific Bell – Ca, Brooks Fiber Communications Of California – Ca.