Depending on your network and security requirements, you might need to add our network to your firewall's whitelist to receive webhook notifications from us.
We do not provide a list of IP addresses. IP addresses change over time due to various reasons, for example, ISP configuration changes. This can lead to disruptions in receiving notification webhooks if IP addresses are hard-coded.
To make sure you can communicate with our network, you can either:
Use a domain allowlist. Include our domain
out.adyen.comif your network configuration allows domain allowlisting.
Systematically resolve our IP addresses. Perform DNS lookup for
out.adyen.com. We recommend that you check every hour. However, if you choose to hardcode the resolved IP addresses to a whitelist, you still run the risk of a disruption if IP addresses change during the DNS lookup interval.