Numbers that you should definitely not answer at the moment

Calls from unknown numbers happen again and again. 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, testing a number frequently until they get a response on 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, and try to divert attention from themselves and avoid trouble by changing their phone numbers again and again. Sometimes they change the complete phone number, sometimes only the back digits.

Aus diesem Grund ändert sich auch die Liste der in einem Zeitraum aktiven Spam-Rufnummern stetig. Da ist es gut, dass viele Leidgeplagte die Spam-Rufnummern der Bundesnetzagentur melden. Diese hat die Möglichkeit, Strafen auszusprechen oder Phone numbern sogar zu sperren. In jedem Fall legt sie aber eine Liste der Nummern an, die aktuell besonders aktiv sind.

Also interesting: How Sky extended my contract against my will

These spam phone numbers are currently particularly active

The app operator “Clever Dialer” also takes a similar approach. Via its application, users can enter phone numbers from which they are being harassed and also 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.

Werbeanrufe, Sweepstake e und Cost trapn werden von Clever Dialer entsprechend kategorisiert. Besonders häufig beschwerten sich Angerufene in Deutschland in den vergangenen Wochen dabei über folgende Phone numbern:

Phone number Area code Type of call
06920436149 +49 (Germany) Other
030201649242 +49 (Germany) Other
01633637113 +49 (Germany) Sweepstake
030439729063 +49 (Germany) Cost trap
0894161727 +49 (Germany) Other
015219376855 +49 (Germany) Cost trap
080020033407 +49 (Germany) Sweepstake
01637876223 +49 (Germany) Cost trap
0451160897620 +49 (Germany) Collection
041819474901 +49 (Germany) Other

Status: March 2022

The top spam number from previous months – 06920436149 – is once again at the top of the list. While it was in second place in January, it climbed to the top of the list of the most annoying spam numbers in February and again in March. Victims sometimes report more than a dozen calls a day from this number, with callers citing advertising for bogus contracts, among other things, as the reason for the call. Another old acquaintance is the Berlin number 030201649242 in second place, which callers use to try to obtain the account number of the person they are calling with the help of fictitious profits.

Users should also beware of 030439729063. This is because this spam number has simply had the last number changed, previously it was listed as 030439729062. If you had already blocked the number, the small change means that it is no longer recognized as such and you have to enter it again.

Block spam calls

Fortunately, however, consumers can do something about the phone spam. If they have staying power, they can simply ignore calls from unknown numbers. But it is even better to use the Internet to determine their origin. 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 possibility to block phone numbers in the menu under the tab “Phone” or “Landline”. Calls from these connections are then no longer put through to the phone. The phone will then simply stop ringing and the line owner will not be bothered any further.

Block unwanted phone numbers in the Fritzbox

On Android smartphones

Android phone owners can also block spam phone numbers through their Google account. To do so, 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 that are 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 command “Block caller” displayed at the bottom.

Read more: How to mute calls from unknown numbers on your iPhone

If companies call via a blocked number, they can still leave a voicemail message, but the called party does not receive any notification of this. They also do not learn that they have been blocked by the recipient.


  • Clever Dialer

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