> For the complete documentation index, see [llms.txt](https://help.sipgate.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sipgate.de/cloud-telefonanlage/en/using-sipgate/telefonie/kann-ich-internationale-telefonnummern-als-absendernummer-setzen.md).

# Can I set international phone numbers as the caller ID?

International phone numbers can generally be set as caller ID numbers. However, if a number outside the European Economic Area (EEA) is set as a caller ID number, calls and SMS messages to the German mobile network **as well as calls to the German landline network** are unfortunately not possible. This also applies to **forwarding from this phone number to the German mobile and landline networks.** You can still be reached on numbers in your account that are outside the EEA. Furthermore, faxes cannot be received or sent with international phone numbers.

If you have set up call forwarding to a German or EU mobile number, calls from numbers outside the European Economic Area will not reach the forwarding destination. This also applies when using a German or EU mobile number set up as an "external phone". Because technically, this function is nothing other than parallel call forwarding.

For outgoing calls with an international phone number, special service numbers (0800, 0900...) cannot be reached.

There is a special case if, with a Swiss caller ID number, you cannot reach certain destinations in Switzerland. Background: Various Swiss telephone providers block incoming calls from abroad when these are transmitted with a Swiss phone number.

{% hint style="warning" %}
**Important:** This only applies if you booked your Swiss phone number through sipgate before August 2025.
{% endhint %}

To work around this, you can set a German number as the caller ID number or also call anonymously.

{% hint style="info" %}
Tip: The person being called in Switzerland can have the corresponding call barring disabled by their telecommunications provider.
{% endhint %}

Further information on the legal situation can be found in the[ Telecommunications Act](https://www.bgbl.de/xaver/bgbl/start.xav?startbk=Bundesanzeiger_BGBl\&start=//*%5b@attr_id=%27bgbl104s1190.pdf%27%5d#__bgbl__%2F%2F*%5B%40attr_id%3D%27bgbl104s1190.pdf%27%5D__1664955655004) as well as in the [Order 44/2022 of the Federal Network Agency regarding the Telecommunications Act.](https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Verbraucher/Rufnummernmissbrauch/Amtsblattverfuegungen/Vfg10_2022.pdf?__blob=publicationFile\&v=3)


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