# Create blocklists

Within the "Blocklist" tab located in the "Account settings" section, you can manage a centralized blocklist across all bidders. There are various ypes of blocking rules available:

* **IAB category**: Choose the IAB category that you wish to restrict on your inventory.
* **Gambling**: You can block gambling categories by toggling this on or off.
* **Advertiser domain**: Input the advertiser domains you want to block, specifying one URL per line.
* **Geotargeting**: Determine whether to limit bid requests to specific countries or exclude certain ones. Note, this applies at the account level and is different to [restricting certain SSPs to specific geos](/getting-started/account-settings/configure-bidders.md).
* **Authorized language**: Select what language you authorize for creatives.
* **Creative ID Blocklist**: If you have a specific Creative ID you want to block, you can add them here.

<figure><img src="/files/KmwrmtKatM3uHiPr3rnE" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
The information is transmitted in the bid request to the bidders.\
\
In the event that these limitations are overlooked by the bidders, Nexx360 conducts a check on the bid response to ensure compliance with the specified requirements. If the response fails to meet the criteria, Nexx360 blocks the bid.\
\
It's important to note that this process relies on the goodwill of the SSP, as some SSPs may not furnish this information voluntarily.
{% endhint %}

{% hint style="info" %}
You can also manage the blocklist at the site level if you need to apply different blocklists depending on the inventory.
{% endhint %}


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