How do I reverse lookup a phone number?

You can type the number into Google to see if others have reported it on sites like ReverseAustralia or ShouldIAnswer. Do NOT call the number to find out who it is.

Why does the caller ID say 'Police' but it's a scam?

Because Caller ID is a very old technology, there's no built-in verification. Scammers route their calls through VoIP systems that let them type whatever name or number they want to appear on your screen.

How do I stop these calls?

Never engage or talk back to them. If you answer and engage, your number gets marked as 'active' and sold to other scammers. Block the number on your smartphone and use built-in spam-blocking features.

Phone Number Scam Checker

Phone number scam checker for suspicious calls.

Got a missed call from a strange international number, or a voicemail from an aggressive 'debt collector'? Stop. Do not call them back. Calling back can cost you massive connection fees. Note: For the most accurate scan results, please paste the full SMS text message alongside the phone number, rather than just the raw number.

Security Insight

Phone number scams rely heavily on 'Caller ID Spoofing'. Scammers use software to make their calls appear as if they are coming from your local area code, or even from government agencies.

Instant risk analysis

Checks sender identity

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Detecting caller ID scams

Attackers exploit your natural curiosity to return missed calls. Watch out for these dominant phone number scam patterns.

The 'Wangiri' (One Ring) Scam

Your phone rings once and hangs up. The number is an expensive international premium-rate line. When your curiosity makes you call back, you are charged massive per-minute fees.

Neighbor Spoofing

Scammers alter their caller ID to match the first 6 digits of your own phone number, tricking you into thinking it's a local neighbor or business.

Fake Tech Support

A caller claiming to be from Amazon, Microsoft, or Telstra saying your account was hacked or your computer is infected.

Automated Robo-extortion

A robotic voice claiming there is a warrant for your arrest or a block on your tax file number, prompting you to 'press 1 to speak to an agent'.

What IsThisSpam checks before you trust a sender

Quick verdicts are useful, but the real value is understanding why something looks safe, uncertain, or risky.

Unexpected urgency

Anyone calling out of the blue demanding immediate payment for a fine, debt, or tech support service is scamming you.

Asking for remote desktop

If a cold-caller asks you to go to your computer and download TeamViewer or AnyDesk, hang up immediately.

Odd international codes

Missed calls from unknown country codes (often starting with +2 or +3) should never be returned.

They ask 'Can you hear me?'

Some scammers try to get you to say 'Yes' to record your voice and use it to authorize fraudulent charges.

Related guides

Use the checker for the fast answer, then read the deeper guidance for recurring scam patterns.

Phone Number Spam Checker

Check if a specific phone number is known for aggressive telemarketing or spam.

Read the guide

SMS Scam Checker

Learn how to spot malicious texts sent from spoofed phone numbers.

Read the guide

FAQ

These are the questions people usually ask right before they click, reply, or pay.

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