What area code is 408?
Here's everything about it.
Instant lookup for the 408 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
408 at a glance
Summary
Cities & regions served by 408
San Jose10 communities on record for 408.
Where 408 sits on the map
Overlay: 669Coverage area
About the 408 region
408 covers San Jose in California, including Cupertino, Los Altos, Los Altos Hills, Los Gatos and Milpitas. The code has been in service since 1959.
As the San Jose region grew, 408 ran low on available numbers, so 669 was added as an overlay code over the same geographic area. Both codes are local to each other and 10-digit dialing applies throughout.
Split of 415; 1998: split to create 831; 2012: overlaid by 669.
Who called me from 408?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 408 does not prove the caller is really in the 408 region or even in the United States.
- Avoid calling back unknown one-ring numbers — some premium-rate scams rely on curiosity callbacks.
- Never share verification codes, payment details, or remote access during an unsolicited call, even if the caller claims to be your bank or a government agency.
- When a 408 call pressures you to act immediately, hang up and contact the organization directly through its official number.
Be the first to add a community report for a 408 number below.
Frequently asked questions
FAQWhat area code is 408?+–
408 is a telephone area code serving San Jose in California, United States, in service since 1959.
Where is area code 408 located?+–
It covers Santa Clara County, including Cupertino, Los Altos, Los Altos Hills, Los Gatos and Milpitas in California.
What cities are in area code 408?+–
Major communities on record include Cupertino, Los Altos, Los Altos Hills, Los Gatos and Milpitas, among others. The code's territory spans the San Jose region of California.
What time zone is 408?+–
408 observes Pacific (PT), which is UTC−8 / −7 DST and follows daylight saving time.
When did area code 408 start?+–
408 entered service in 1959. Its history: split of 415; 1998: split to create 831; 2012: overlaid by 669.
Why do calls to 408 require 10-digit dialing?+–
408 shares its territory with overlay code 669. Because both codes serve the same geographic area, the phone network needs all 10 digits to route a call, and calls between the codes are still local.
Is 408 a scam area code?+–
Scam and robocall traffic can use any North American code, 408 included — caller ID is easy to spoof, so the code alone does not tell you who is really calling. Check the community reports on this page before calling back an unknown 408 number, and report anything suspicious.
Can I get a 408 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 408 number regardless of where you physically live.