🇺🇸 424 area code
Area code 424 covers California, Los Angeles, Santa Monica and Torrance and the surrounding area in California. It shares that territory with 310, so the same neighbourhood can have numbers in any of them. Enter a 424 number below for a free check before you call back.
- Location: California
- Time zone: Pacific (UTC−8)
- In service since August 26, 2006
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Area code 424 at a glance
- Area code
- 424
- Location
- California, United States
- Main cities
- California, Los Angeles, Santa Monica, Torrance, Beverly Hills, Compton
- Time zone
- Pacific (UTC−8)
- Local time now
- —
- In service since
- August 26, 2006
- Created from
- 310
- Overlay codes
- 310
- Local calls
- Dial 1 + 10 digits
- Number format
- (424) 555-0123
- From abroad
- +1 424 555 0123
Cities in the 424 overlay area
- California
- Los Angeles
- Santa Monica
- Torrance
- Beverly Hills
- Compton
- Gardena
- Hawthorne
- Inglewood
- San Pedro
Is a 424 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 424 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 424 number to people in California because a local-looking call is more likely to be answered. If a 424 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 424
424 entered service on August 26, 2006, as an overlay on 310, which had run short of numbers.
It is part of the 310/424 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.
Because 424 overlays the same ground, the cities listed are those of the codes it shares with.
よくある質問
Area code 424 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 424?
Area code 424 is in California, United States. It covers California, Los Angeles, Santa Monica, Torrance, Beverly Hills and Compton.
What time zone is area code 424?
424 is in the Pacific (UTC−8) time zone, and observes daylight saving time.
What area codes overlay 424?
310 serves the same area as 424. Numbers in all of them are local to one another.
When did area code 424 start?
424 entered service on August 26, 2006, created from 310.
How do I find out who called me from 424?
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 424?
If you live in or near California, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 424 callers who will not leave a message are best looked up before you call back.