> 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/anonyme-und-unerwuenschte-anrufe-blockieren-oder-umleiten.md).

# Block or redirect anonymous and unwanted calls

Block or specifically redirect anonymous and unwanted calls in sipgate – setup in the account.

With your account, you can control how unwanted callers are handled – either block them or forward them directly to voicemail. This applies both to specific phone numbers you want to block and to anonymous calls or advertising calls.

{% hint style="warning" %}
Important: For blocking to work, voicemail must be booked and activated.
{% endhint %}

#### Anonymous calls

{% tabs %}
{% tab title="sipgate classic" %}
Open the [**User detail page**](https://app.sipgate.com/users) and click on **Edit routing**.\
There you will find the toggle *Block anonymous calls.*

![sipgate-help-center-anonymous1.png](https://4045603198-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg0qj71PeONPljdPedXLf%2Fuploads%2Fgit-blob-b0eb39d7d4473017a838fb2cce288b6a8db9da38%2Fsipgate-Hilfecenter-anonym1.png?alt=media)

* **Block**: Callers hear a message that you are currently unavailable.\
  \&#xNAN;*Note: Existing forwarding rules will still apply.*
* **Forward**: The call is forwarded directly to your voicemail, where callers can leave a message.

Confirm with **Save** and then click on **Finish editing**, so that the changes are applied.

{% hint style="info" %}
**Note:** These settings are not available in this form in sipgate neo.
{% endhint %}
{% endtab %}

{% tab title="sipgate neo" %}
![AnonymousFilter\_Neo.png](https://4045603198-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg0qj71PeONPljdPedXLf%2Fuploads%2Fgit-blob-9cfa382181152a394d38a2a68a7bdac85f2883fa%2FAnonymfilter_Neo.png?alt=media)

Open the Visual Routing of a personal or shared channel you want to edit. Drag the routing element "Anonymous filter" from the sidebar into the call flow. The anonymous filter is then active immediately and anonymous callers are rejected immediately. If you want to forward to a different destination instead, you can configure this in the forwarding below the anonymous filter.

To remove the anonymous filter, click the routing element and select "Deactivate".
{% endtab %}
{% endtabs %}

#### Anonymous faxes

For analogue fax machines there is the toggle *Reject anonymous faxes*:

* **Block**: The calling fax receives an unavailable announcement and tries to send again three times. ***Important:** Disable all forwarding rules beforehand.*
* **Forward**: The fax goes to voicemail. There you receive three messages with fax noises.

{% hint style="info" %}
**Note:** These settings are not available in this form in sipgate neo.
{% endhint %}

#### Block list for unwanted calls

If you want to block specific phone numbers (e.g. advertising calls), use the block list.\
Go to **My telephony** → **settings** → **Block list** and click on **Add phone number**.

![](https://4045603198-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg0qj71PeONPljdPedXLf%2Fuploads%2Fgit-blob-1ef16e7488e7d58b316db1f884550580c061a384%2Fmceclip1.png?alt=media)

* **Exact number**: Enter the desired phone number and add it to the list.
* **Number ranges**: Enter the area code in international format (e.g. +49 1579) and check *Block all calls starting with this phone number*.

In the block list overview, you can see all blocked numbers and edit or delete them.

{% hint style="warning" %}
**Important:** The block list applies to all users of the account. Only calls can be blocked via the block list, not incoming faxes. For the block list to work, your voicemail must be booked and activated.
{% endhint %}

**Block phone numbers directly in the sipgate app**

In the sipgate app (version 2.30.0 or higher), you can block individual phone numbers directly from the call list. To do this, hover over a call. In the menu you will find the option "Block phone number", which automatically rejects future calls from this number. Numbers that have already been blocked can be unblocked again via the same menu.

![Screenshot 2025-12-30 at 13.01.07.png](https://4045603198-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg0qj71PeONPljdPedXLf%2Fuploads%2Fgit-blob-a038ae53ce74f3a3c598a21739fe69732b0f60f8%2FScreenshot%202025-12-30%20at%2013.01.07.png?alt=media)

Please note that only individual phone numbers can be blocked in the app – blocking entire number ranges is currently not possible in the app.

#### Further reading

Information on blocking Direct-IP (SPIT) calls can be found in the article:\
[*How do I block Direct IP (SPIT) calls from numbers like 100, 1001 or IP addresses?*](https://help.sipgate.de/hc/de/articles/21081871026973-Wie-blockiere-ich-Direct-IP-SPIT-Anrufe-von-Nummern-wie-100-1001-oder-IP-Adressen)


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