Google App Engine - list of IP addresses?

Question

I know that Google App Engine does not support an application having a static IP address, but I\'d like to know if there is a list or range of IP addresses that an app could

Answer 1

I threw this together quickly, for use with the gcloud create-firewall command.

#!/bin/bash

netblocks=$(dig TXT _cloud-netblocks.googleusercontent.com @ns1.google.com +short | sed -e 's/"//g')

for block in $netblocks; do
    if [[ $block == include:* ]]; then
        ipblocks=$(dig TXT ${block#include:} @ns1.google.com +short)

        for ipblock in $ipblocks; do
            if [[ $ipblock == ip4:* ]]; then
                printf "${ipblock:4},"
            fi
        done
    fi
done