Neighbor spoofing: why scam calls show your own area code

What neighbor spoofing is

Caller ID shows whatever number the calling system sends. It's a label, not proof. Scammers use software that lets them type in any number they like.

Neighbor spoofing is when they pick a number that looks like it belongs near you. It often has your area code. Sometimes it even has the same next three digits as your own number.

The call itself may come from another state or another country. It works because people are more likely to answer a number that looks like a neighbor, a school or a doctor's office.

Why it keeps happening

Faking a number costs a scammer almost nothing. They can show a different number on every call. That's why blocking the last number rarely stops the next one.

In the United States, it's against the law to fake caller ID to cheat or harm someone. But many of these calls start overseas, where they are hard to trace.

Phone companies now check many calls. Your phone may add a warning to a suspicious call, or mark a number as verified. These checks help, but they don't catch every faked call. Treat caller ID as a hint, not proof.

When the number belongs to someone real

The number you see often belongs to a real person or business. They usually have no idea it's being used. If you call it back, you'll most likely reach someone confused, not the scammer.

Sometimes the faked number is yours. You may get a call that shows your own number. Or strangers may call you to ask why you called them.

That doesn't mean your phone was hacked. Someone borrowed your number for their caller ID. There isn't much you can do to stop it, and scammers tend to move on to other numbers.

If people call to complain, a short, calm reply is enough: your number was faked, and you didn't call them.

What you can do

• Let calls from numbers you don't know go to voicemail. A real caller will leave a message.
• Don't call back a number you don't know just because it looks local. If it rang once and hung up, leave it.
• If a caller says they're from your bank, a government office or a company you use, hang up. Call the number you already trust, like the one on your card or statement.
• Don't press any keys or answer questions from a recording. That tells the system a real person picked up.
• Save the people and places you deal with in your contacts, so you can tell real calls at a glance.
• Report scam calls to the FTC at reportfraud.ftc.gov.

If a scam call already got through, see what to do after a scam call.

How Nexus handles local-looking calls

People in your contacts ring your phone as normal, and Nexus never blocks them.

Numbers on the spam list are refused, and most callers you don't know are asked who they are before your phone rings. That's the same whether the number looks local or not: an automated assistant tells them the call is being screened and may be transcribed, then asks who's calling and why.

Anthropic's Claude AI reads what the caller says and decides what to do. A real caller is put through, or leaves a voicemail you can read.

Calls with no caller ID at all, shown as "No Caller ID" or "Unknown", are refused.

Nexus works on Android and iPhone. More about how it works is on the About page.

Quick answers

Sources

• FCC: Caller ID Spoofing
• FCC: Combating Spoofed Robocalls with Caller ID Authentication
• FTC: Robocalls
• FTC: How To Block Unwanted Calls