Where is the 857 area code?

The 857 area code covers Boston, Massachusetts (Eastern Time).

Are calls from 857 spam?

Not all 857 calls are spam, but scammers often spoof local 857 numbers ("neighbor spoofing") so a call looks familiar. Look up the specific number to check.

857 area code

Boston, Massachusetts · Eastern Time

The 857 area code serves Boston, Massachusetts. Getting a call from 857? It may be a real local caller — but scammers frequently spoof local 857 numbers so the call looks familiar (“neighbor spoofing”), even when they’re nowhere near Boston.

Recently reported 857 numbers

No 857 numbers have been reported here yet. If a 857 number called you, look it up above and add a report to warn others.

Common scams using 857 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 857 are normally assigned. Caller ID can be spoofed, so a 857call may not actually originate from Boston, Massachusetts.