🇺🇸 650 area code
Area code 650 covers Redwood City, Palo Alto, San Mateo and Daly City and the surrounding area in California. Enter a 650 number below for a free check before you call back.
- Location: Redwood City, California
- Time zone: Pacific (UTC−8)
- In service since August 2, 1997
Nummer abfragen
Gültigkeit, Anbieter, Leitungstyp und Region im ersten Durchgang.
Area code 650 at a glance
- Area code
- 650
- Location
- California, United States
- Main cities
- Redwood City, Palo Alto, San Mateo, Daly City, San Carlos, Mountain View
- Time zone
- Pacific (UTC−8)
- Local time now
- —
- In service since
- August 2, 1997
- Created from
- 415
- Local calls
- Dial 1 + 10 digits
- Number format
- (650) 555-0123
- From abroad
- +1 650 555 0123
Cities in area code 650
- Redwood City
- Palo Alto
- San Mateo
- Daly City
- San Carlos
- Mountain View
- Los Altos
- Pacifica
- Burlingame
- Half Moon Bay
Is a 650 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 650 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 650 number to people in California because a local-looking call is more likely to be answered. If a 650 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 650
650 entered service on August 2, 1997, when it was split from 415.
FAQ
Area code 650 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 650?
Area code 650 is in California, United States. It covers Redwood City, Palo Alto, San Mateo, Daly City, San Carlos and Mountain View.
What time zone is area code 650?
650 is in the Pacific (UTC−8) time zone, and observes daylight saving time.
When did area code 650 start?
650 entered service on August 2, 1997, created from 415.
How do I find out who called me from 650?
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 650?
If you live in or near California, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 650 callers who will not leave a message are best looked up before you call back.
Got a call from 650?
Run the free check first — validity, carrier, line type and region — and unlock the full report only if you need it.