Google Cloud Platform : ip address range

list_gcp_iprange.py

#!/usr/local/bin/python3.6
import dns.resolver
import re

def main():
    v4 = []
    v6 = []
    v4, v6 = que('_cloud-netblocks.googleusercontent.com')
    for o4 in v4:
        print(o4)
    for o6 in v6:
        print(o6)

def que(netblock):
    v4 = []
    v6 = []
    resr = dns.resolver.Resolver()
    resr.nameservers = ['8.8.8.8']
    ans = resr.query(netblock,'TXT')
    pi = re.compile('include:(.*?)\s',re.IGNORECASE)
    p4 = re.compile('ip4:(.*?)\s',re.IGNORECASE)
    p6 = re.compile('ip6:(.*?)\s',re.IGNORECASE)
    for line in ans:
        st = line.to_text()
        for a in pi.findall(st):
            a4, a6 = que(a)
            v4.extend(a4)
            v6.extend(a6)
        v4.extend(p4.findall(st))
        v6.extend(p6.findall(st))
    return(v4, v6)

main()

I've made a Github repo with an updated list :
https://github.com/pierrocknroll/googlecloud-iprange