I need to provide my CDN the IP ranges that I might be using when I create GCE instances. Is the list of IP ranges by GCE location published anywhere?
We don't currently publish which IPs map to which ranges. We can and do move blocks as necessary to balance capacity. However, all Google Cloud IPs are listed here:
dig txt _cloud-netblocks.googleusercontent.com +short
"v=spf1 include:_cloud-netblocks1.googleusercontent.com include:_cloud-netblocks2.googleusercontent.com include:_cloud-netblocks3.googleusercontent.com ?all"
See also: