# Security

All requests must use `HTTPS` to ensure a secure connection. All of your configuration URLs such as webhooks must begin with `https://` as well.

Various identifiers and keys are shown throughout API documentation to portray format and length. These values do not work for authenticating or requesting a PandaDoc resource.

To get your account-specific access keys, generate an API key or create an application in the [Developer Dashboard](https://app.pandadoc.com/a/#/settings/api-dashboard).

## IP safelist for Webhooks

Please find below IPs from where you can safely accept PandaDoc webhooks events:

### US servers

* 52.12.31.116/32
* 52.37.240.175/32
* 35.167.41.246/32

### EU servers

If you only work with [http://app.pandadoc.eu/](http://app.pandadoc.eu/), use the IPs below:

* 3.76.175.239
* 18.192.96.161
* 18.158.79.41

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    <a class="ui-button ui-button-large" href="https://signup.pandadoc.com/?ss=api-dev&plan=rec_plans_v8_api_ss_mn&lng=en-US">Create your free sandbox</a>
    <a class="ui-button ui-button-large ui-button--secondary" href="https://www.pandadoc.com/api-custom-request/?ss=api-dev">Request a demo</a>
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