# One-Ring Scam in Germany: Why Calling Back Costs You

> A one-ring scam, also called Wangiri or ping call, is a call from an unknown, usually foreign number that rings once and hangs up so you call back. The callback goes to an expensive number, often with recorded messages that keep you on the line. Do not call back, block the number and report it with date, time and displayed number.

- URL: https://nummernindex.de/en/spam-and-fraud/one-ring-scam-germany/
- Language: en
- Updated: 2026-10-19
- Publisher: Nummernindex (OnlineBuilders LLC, https://onlinebuilders.biz)

The pattern is so common that it has a name in several languages. Japanese has Wangiri, roughly "one ring and cut". German regulators call it a Ping- or Lock-Anruf, a bait call. The mechanics are identical everywhere: your phone rings once, you miss it, and an unfamiliar number sits in your call log, hoping you will be curious.

For people who have moved to Germany, the risk is a little higher than for locals. You may genuinely expect calls from abroad, from family, a former employer or a bank back home, so a missed international call does not look strange to you. That is exactly what the scammers rely on.

## How the one-ring scam works

**Anatomy of a one-ring call**

1. **One ring** An unknown foreign number rings once or twice, then hangs up.
2. **Missed call** The number stays in your call log, sometimes with a prefix that resembles a German area code.
3. **Callback** You call back and reach a number billed at a high international rate.
4. **Stalling** Recorded messages or music try to keep you on the line as long as possible.
5. **The bill** The charge appears on your phone bill and part of it reaches whoever runs the number.

The caller hangs up before you can realistically answer. That is the point: a conversation would reveal the trick, a missed call does not.

Some numbers are chosen because they look local. The Bundesnetzagentur's own example is Madagascar, 00261, which is easy to mistake for the German area code of Koblenz, 0261. Tunisia's 00216 looks similar to Mönchengladbach's 02161. If you are still learning German area codes, our guide to [German area codes](https://nummernindex.de/en/number-ranges/german-area-codes/) helps you spot the difference.

## Why one-ring calls in Germany now come from foreign numbers

German law has closed two routes. Since 1 December 2022, section 120 of the Telecommunications Act bans German premium-rate, mass-calling and directory numbers from appearing as caller ID, and networks must drop such calls. And calls handed over from foreign networks may no longer display a German number at all; the display is suppressed, so you see "unknown". Nobody can call back "unknown".

What remains for the scammers are genuine foreign numbers with expensive callback rates. So the practical rule is simple: one short ring, a foreign country code and nobody you know in that country means you do not call back. Our [number checker](https://nummernindex.de/en/number-checker/) shows which country a code belongs to and specifically warns about single rings from foreign numbers.

## Country codes to be careful with

There is no fixed list of scam countries, and the operators move around. One useful indicator is an order by the Bundesnetzagentur: German mobile networks must play a free price announcement before connecting calls to certain international codes. According to the regulator, the measure runs until 1 March 2027. Codes on the list include:

- Africa: Morocco (+212), Algeria (+213), Tunisia (+216), Senegal (+221), Côte d'Ivoire (+225), Liberia (+231), Cameroon (+237), Gabon (+241), Madagascar (+261), Zimbabwe (+263)
- Europe and the Caucasus: Albania (+355), Armenia (+374), Belarus (+375), Serbia (+381), Montenegro (+382), Bosnia and Herzegovina (+387), North Macedonia (+389), Azerbaijan (+994)
- Pacific and Caribbean: Papua New Guinea (+675), Tonga (+676), Vanuatu (+678), Samoa (+685), Dominica (+1 767), Aruba (+297)
- Satellite and international networks: +881, +882, +883

The full list is on the regulator's [page on ping calls](https://www.bundesnetzagentur.de/DE/Vportal/TK/Aerger/Faelle/Ping/start.html) (in German). If your family lives in one of these countries, you will of course get genuine calls from there too. The list is a warning sign, not proof.

Notice the +1 767 for Dominica. It looks like a North American number, and someone from the US or Canada might assume a domestic area code. The same applies to other Caribbean codes that share the +1 country code.

## What the free price announcement means for you

That regulator order has a practical side effect. If you call one of the listed codes from a German mobile, you hear a free announcement stating the price before the call connects. Treat it as your exit. If you hear a price announcement while calling back a "missed call", hang up. Up to that point nothing has been charged.

There is no such announcement on German landlines. There, only your own recognition of the code or a block on international calls protects you.

## You already called back: what now

Do not panic. What the callback costs depends on your provider's international rate and on how long you stayed on the line. Then work through these steps:

1. Screenshot the call log so you have the time and the displayed number.
2. Check your next itemised bill or the usage overview in your provider's app.
3. Dispute unexpected charges in writing with your provider. Section 67 of the Act gives you eight weeks from receiving the bill.
4. Report the call to the Bundesnetzagentur. It needs the displayed number, the time, and whether you called back and what happened.

The regulator can order numbers to be switched off and ban billing for them. For suitable cases it can also order refunds of charges already paid, though there is no guarantee. Our guide to [reporting scam calls in Germany](https://nummernindex.de/en/blocking-and-reporting/report-scam-calls-germany/) explains which form to use and how to fill it in if your German is limited.

One limit: the regulator does not investigate one-ring complaints where no number was displayed. Without a number there is no callback and nothing to trace.

To give a sense of scale, the regulator received 85,158 complaints about number misuse of all kinds in 2025 and had around 6,200 numbers switched off that year. Reports do lead to action.

## How to protect yourself for good

The best defence is patience. Someone who really needs you will call again, text or leave voicemail. A one-ring caller does none of that.

**Before you call back an unknown number**

- [ ] Does it start with + or 00 and a foreign country code?
- [ ] Do you know anyone in that country?
- [ ] Did it ring only once or twice?
- [ ] Is there a voicemail or text that goes with it?
- [ ] Does the number checker flag it as foreign or satellite?

If the first three answers are yes and the fourth is no, leave it. Technical options help too:

- Block individual numbers on your phone or router. Our guide on how to [block spam calls](https://nummernindex.de/en/blocking-and-reporting/block-spam-calls/) covers iPhone, Android and German landlines.
- Silence unknown callers. On an iPhone this is in the Phone settings; on Android it depends on the phone and the dialler app.
- Ask your German provider to block premium ranges such as 0900 and 0137 on your line. Section 61 of the Act gives you that right, free of charge.
- If you never call abroad from a particular line, ask whether international calls can be barred.

Companies are not immune either, for example when staff call back from work phones or a hacked phone system dials expensive numbers on its own. Telephony belongs in any [cyber security](https://onlinebuilders.biz/solutions/cyber-security) review.

Your next step today: open your phone settings and turn on silencing for unknown callers if you do not expect important calls from new numbers, then save the people abroad you do talk to as contacts so their calls still get through.

## FAQ

### Does a one-ring call cost me anything if I don't answer?

No. As long as you neither answer nor call back, the call costs nothing. Charges only arise when you dial the number yourself.

### I called back a one-ring number. What should I do?

Screenshot your call log, check your next itemised bill and dispute unexpected charges with your provider within eight weeks. Then report the number to the Bundesnetzagentur, mentioning that you called back and what you heard.

### Why do I get one-ring calls from countries I have never visited?

The calls are not aimed at people with links to that country. Anyone with a phone number can receive them. If you have no contacts there, treat the call as bait.

### I have family abroad. How do I tell a real missed call from a scam?

Real callers try again, send a message or leave voicemail. A one-ring call does none of that. If in doubt, contact your relative through a number already saved in your phone, not the one in the call log.

Photo: Lsjm, CC BY-SA 3.0 (https://commons.wikimedia.org/wiki/File:S%C3%BCwex_Tisch_mit_Handy.jpg)