List all IP ranges from Google Cloud Platform.
You can execute the bash script with something like ./list.sh | sort -n | uniq
or grab directly the list (contains IPv4 and IPv6 entries) : https://raw.githubusercontent.com/pierrocknroll/googlecloud-iprange/master/list.txt
For only IPv4 entries : https://raw.githubusercontent.com/pierrocknroll/googlecloud-iprange/master/list_ipv4.txt
For only IPv6 entries : https://raw.githubusercontent.com/pierrocknroll/googlecloud-iprange/master/list_ipv6.txt
I will update this list as soon as I can.
See : https://cloud.google.com/compute/docs/faq#find_ip_range