🇺🇸 408 area code
Area code 408 covers San Jose, Santa Clara, Milpitas and Campbell and the surrounding area in California. It shares that territory with 669, so the same neighbourhood can have numbers in any of them. Enter a 408 number below for a free check before you call back.
- Location: San Jose, California
- Time zone: Pacific (UTC−8)
- In service since 1959
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Area code 408 at a glance
- Area code
- 408
- Location
- California, United States
- Main cities
- San Jose, Santa Clara, Milpitas, Campbell, Sunnyvale, Cupertino
- Time zone
- Pacific (UTC−8)
- Local time now
- —
- In service since
- 1959
- Created from
- 415
- Overlay codes
- 669
- Codes split from it
- 669, 831
- Local calls
- Dial 1 + 10 digits
- Number format
- (408) 555-0123
- From abroad
- +1 408 555 0123
Cities in area code 408
- San Jose
- Santa Clara
- Milpitas
- Campbell
- Sunnyvale
- Cupertino
- Los Gatos
- Gilroy
- Morgan Hill
- Saratoga
Is a 408 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so a 408 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 408 number to people in California because a local-looking call is more likely to be answered. If a 408 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 408
408 entered service in 1959, when it was split from 415.
It is part of the 408/669 overlay: the codes cover the same area, and a new line there can be given a number in any of them. Two neighbours — or two phones in one household — can have different area codes. That is also why local calls need the full ten digits.
As the region grew, 669 and 831 were carved out of or added to 408.
よくある質問
Area code 408 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 408?
Area code 408 is in California, United States. It covers San Jose, Santa Clara, Milpitas, Campbell, Sunnyvale and Cupertino.
What time zone is area code 408?
408 is in the Pacific (UTC−8) time zone, and observes daylight saving time.
What area codes overlay 408?
669 serves the same area as 408. Numbers in all of them are local to one another.
When did area code 408 start?
408 entered service in 1959, created from 415.
How do I find out who called me from 408?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 408?
If you live in or near California, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 408 callers who will not leave a message are best looked up before you call back.