Where is the 650 area code?

The 650 area code covers San Mateo, California (Pacific Time).

Are calls from 650 spam?

Not all 650 calls are spam, but scammers often spoof local 650 numbers ("neighbor spoofing") so a call looks familiar. Look up the specific number to check.

650 area code

San Mateo, California · Pacific Time

The 650 area code serves San Mateo, California. Getting a call from 650? It may be a real local caller — but scammers frequently spoof local 650 numbers so the call looks familiar (“neighbor spoofing”), even when they’re nowhere near San Mateo.

Recently reported 650 numbers

No 650 numbers have been reported here yet. If a 650 number called you, look it up above and add a report to warn others.

Common scams using 650 calls

🏛️ IRS / Tax Scam

"You owe back taxes — pay now or be arrested."

🪪 Social Security Scam

"Your Social Security number has been suspended."

🚗 Auto Warranty Robocall

"Your car's extended warranty is about to expire."

📦 Package / Amazon Scam

"There's a problem with your delivery / Amazon order."

Area-code information reflects where numbers in 650 are normally assigned. Caller ID can be spoofed, so a 650call may not actually originate from San Mateo, California.