One-ring phone scam: why an unknown number rings once and hangs up
Quick answer
A call that rings once and stops, from a number you don't know, is bait. The FCC says the goal is to make you call back and get connected to an international number with heavy fees. Don't return it. Ask your carrier about blocking international calls.
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- Phone call, Voicemail
- Last updated
Reviewed by Anthon Wansland
Head of Product & Co-Founder
Serus is a privacy company with paid tools to find and remove your personal data. This page is free and based on official sources.
How it works
The FCC describes the one-ring scam like this: for illegal robocallers, the goal isn't always getting you to answer. Sometimes it's getting you to call back.
Your phone rings once and stops. The number can look like it comes from somewhere in the US, with three digits that resemble a US area code. The FCC says scammers often use international numbers from regions that also start with three-digit codes, for example "232" goes to Sierra Leone and "809" goes to the Dominican Republic. Spoofing can mask the number further.
If you call back, you may be connected to a number outside the US. You can be charged a connection fee plus significant per-minute fees for as long as they keep you on the line. The charges can show up on your bill as premium services, international calling or toll-calling.
The FCC also notes variations built on fake voicemails that urge you to call a number with an unfamiliar area code to "schedule a delivery" or to tell you about a "sick" relative.
There's no way to tell from the missed call alone who is behind a number, and numbers get spoofed, so a list of "scammer numbers" won't protect you. The FCC's advice is about what you do with the call, not which number it was.
Sources checked: fcc.gov
Last verified against the official page:
Red flags
- A call that rings once and stops, from a number you don't recognize
- An unfamiliar three-digit area code that may be international
- A voicemail asking you to call back to "schedule a delivery" or about a "sick" relative
- A number that looks local but isn't, because caller ID can be spoofed
Example message
[Voicemail] Hi, we have a package for you and need to schedule your delivery. Please call us back at [phone number].
What to do
- 1
Don't return the call
The FCC says that if your phone rings once and you don't recognize the number, you shouldn't call back. Don't answer or return calls from numbers you don't recognize.
- 2
Check the area code first
Before calling any unfamiliar number, check whether the area code is international.
- 3
Ask your phone company to block international calls
If you don't make international calls, the FCC suggests asking your carrier to block outgoing international calls on your line.
- 4
If you already called back and got billed
Try to resolve the charge with your telephone company first. If you can't, you can file a complaint with the FCC at no cost.
Report it
Check if your details are exposed with Serus
Scammers find your number and address on data brokers and people-search sites. Serus removes them.
Why you got it
Robocallers dial huge ranges of numbers, so a one-ring call doesn't always mean they have your details. If scam calls and texts are also reaching you by name, your phone number is probably listed on people-search sites or in a breach. Serus finds where your phone number and address are listed and asks for removal, and alerts you when your data shows up in a breach, so fewer scammers can reach you.
Frequently asked
Why does my phone ring once and stop?
The FCC says the goal of a one-ring call is to get you to call back. Calling back can connect you to an international number with connection and per-minute fees.
Can I look up whether a number is a scammer?
Not reliably. Numbers can be spoofed and international area codes can resemble US ones, so the FCC's advice is to not return calls from numbers you don't recognize.
I called back. What now?
Check your bill. If you were charged, try to resolve it with your phone company first, then file a complaint with the FCC if you can't.
Can I block these calls?
The FCC suggests asking your phone company to block outgoing international calls if you don't make them.
Sources
Something wrong or out of date? Tell us and we'll re-check it.
