We scale up and down our infrastructure based on the volume of traffic coming through our servers. As traffic increases, and we require greater server capacity, we auto-scale and turn on additional servers. During this process new IP addressess are created. We won't know in advance the IP addresses of these ‘new’ servers. As a result of this it is not possible to provide a list of IP addresses to clients for whitelisting.
However, we are able to handle various authentication scenarios where we could pass credentials/tokens along with our requests. Please contact your account manager to discuss.