Should You Answer Calls From Unknown Numbers?

It's tempting to answer every call in case it's important. But for unknown numbers, the safer default is to let it ring — and here's why.

Step by step

Know what answering signals

To a robocaller's system, a pickup confirms your number is a live, answering line — which makes it more valuable and gets it called (and sold) more.

Let it go to voicemail

Real callers with something important will leave a message. Scammers and robocallers almost never do.

Look the number up

Got a missed call or voicemail from a number you don't know? Look it up to see its location, line type, and risk before deciding whether to call back.

Call back safely if needed

If it seems legitimate (say, a doctor's office), confirm the number against the organization's official website before returning the call.

Tips

Expecting an important call (a job, a delivery, a doctor)? Add the number to your contacts in advance so it rings through.

Never call back an unknown international number you don't recognize — some are premium-rate 'one-ring' scams.

A number that calls once and never leaves a voicemail is almost always spam.

Frequently asked questions

Is it dangerous to answer a spam call?

Answering alone won't hack your phone, but it confirms your number is live and can lead to more calls — and engaging with the caller is where the real risk starts.

What is a 'one-ring' scam?

A call that rings once to bait you into calling back an international premium-rate number that charges you per minute. Don't call back numbers you don't recognize.

Should I block every unknown number?

You can't block them all (they change), but silencing unknown callers and looking up the persistent ones is an effective routine.