Yes, we have IP whitelists, found here:
https://bunnycdn.com/api/system/edgeserverlist/
https://bunnycdn.com/api/system/edgeserverlist/IPv6/
And in plain format:
https://bunnycdn.com/api/system/edgeserverlist/plain
https://bunnycdn.com/api/system/edgeserverlist/IPv6/plain
Bear in mind that we may occasionally rotate IPs, so please monitor these for any changes on our network.