- https://docs.aws.amazon.com/general/latest/gr/aws-ip-ranges.html
- https://ip-ranges.amazonaws.com/ip-ranges.json
for LINE in `dig txt _cloud-netblocks.googleusercontent.com +short | tr " " "\n" | grep include | cut -f 2 -d :`
do
dig txt $LINE +short
done | tr " " "\n" | grep ip4 | cut -f 2 -d : | sort -n