Our API is designed in such a way, that with every message you receive from us, you have to call the Mollie API yourself to check whether something has actually changed. This means there is no point in checking the IP address to decide whether or not the request is really from us.
- 188.8.131.52, or;
- 184.108.40.206, or;
- in the range of 220.127.116.11 - 18.104.22.168.
We seriously discourage using IP address information to control any logic.