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Do not answer these numbers in July

Calls from unknown numbers are a common occurrence. These are often spam calls with a less than serious background. atechbook lists the numbers that are currently causing the most trouble.

The companies and call centers behind the spam phone numbers call at every conceivable time of day and night. Usually even several times in quick succession. The reason: computers often take over the calls, frequently testing a number until they get a response at the other end. As a result, callers who answer a call from such an unknown number often hear a crackling and hissing noise on the line before they are connected to an employee – if at all.

The callers are often based in call centers and have only one mission: to request data from the person they are calling and to lure them into flimsy sweepstakes or dubious contracts. In the worst case, such a call can be really expensive for the recipient. Advertising calls of this kind are however legally forbidden, if the called person did not permit them explicitly. Of course, the companies and call centers know this, too. They therefore regularly change the phone numbers they use to call in order to divert attention from themselves and avoid trouble. Sometimes they change the complete phone number, sometimes only the back digits.

For this reason, the list of spam numbers active in a given period is also constantly changing. It is a good thing that many sufferers report spam numbers to the Federal Network Agency. The agency has the option of imposing penalties or even blocking phone numbers. In any case, it creates a list of numbers that are currently particularly active.

Also interesting: How can I check whether my number is listed in the phone book?

These spam numbers are currently particularly active

The app operator “Clever Dialer” also takes a similar approach. Users can use the app to enter phone numbers that are bothering them and block them if they wish. Based on the data, Clever Dialer compiles a monthly list of spam phone numbers that are currently causing the most trouble.

Clever Dialer categorizes advertising calls, sweepstakes and cost traps accordingly. In the past few weeks, the following telephone numbers have been the most frequently complained about by callers in Germany:

Telephone number Area code Kind of the call
040254671238 +49 (Germany) Cost trap
015210151906 +49 (Germany) Cost trap
030439729068 +49 (Germany) Cost trap
03016637169 +49 (Germany) Sweepstakes
06920091655 +49 (Germany) Other
01773996325 +49 (Germany) Cost trap
04029996426 +49 (Germany) Cost trap
040607739322 +49 (Germany) Cost trap
01768429693 +49 (Germany) Sweepstake
021198709935 +49 (Germany) Other

Status: July 2022

As in the previous month, the number 040254671238, via which scammers want to conclude new energy contracts, occupies first place. Over 9000 calls were reported by victims in June alone. In second place is 015210151906, which is new to the list. Callers report lottery scams here.

Users should also beware of 030439729068, which ranks third on the list of the most annoying spam numbers. For this phone number, only the last number was changed, previously it was represented in the list as 030439729067, 030439729066, 030439729064, 030439729063 and 030439729062, respectively. If you had already blocked the number, the small change in the final digit means that it is no longer recognized as such and you have to enter it again.

Beware of current large-scale scam

atechbook repeatedly reports scams that fraudsters use particularly frequently to obtain users’ data. One of them is the Europol scam, which has been causing trouble for several months in a row now. In the name of the police authority, scammers call users and try to obtain sensitive data. An atechbook editor was also called by an alleged Europol employee several days in a row. On the phone, she then informed about an alleged identity theft.¬†In this case, the number the scammers used to call was +49 176 23816914, but sometimes they manage to technically transmit Europol’s real phone number to make it appear that the police are actually on the line. So be alert if Europol calls you with alleged warnings.

Read also: Europol rip-off – even the BKA warns against these calls!

Block spam calls

Fortunately, however, consumers can do something about the telephone spam. If they have staying power, they can simply ignore calls from unknown numbers. But it is even better to find out their origin on the Internet. To do this, they enter a spam phone number that appears repeatedly on their phone into the search bar of their browser. This often reveals who is behind the calls.

If the number is questionable, it can be blocked easily and free of charge via most routers and smartphones. There is a small catch: unfortunately, blocking only works for a specific phone number. If companies change their spam numbers, they have to be added to the list of blocked lines.

Via landline

Many routers from Netgear, D-Link, the Fritzboxes from AVM and others offer the option to block phone numbers in the menu under the “Phone” or “Landline” tab. Calls from these connections are then no longer put through to the phone. The phone will simply stop ringing and the subscriber will no longer be bothered.

On Android smartphones

Android phone owners can also block spam phone numbers via their Google account. To do this, they open their smartphone’s phone app and click on the icon with the three dots in the upper right corner. Under “Spam” or “Block”, all unwanted numbers can now be entered here. If you like, you can even ignore all unknown numbers. Then the phone will only put through calls from contacts stored in the address book.

On the iPhone

Of course, blocking certain phone numbers also works on Apple’s iPhone. To do this, users go to their call log and select the corresponding call. Click on the button for more information, then a new page opens with the “Block callers” command displayed at the bottom.

Read more: How to mute unknown calls on iPhone.

If companies call from a blocked number, they can still leave a voicemail message, but the called party will not receive any notification about it. They will also not know that they have been blocked by the recipient.


  • Clever Dialer


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