Getting Google IP ranges

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Google puts them into SPF records ?!

dig +short txt _cloud-netblocks.googleusercontent.com | sed 's/"//g; s/ip4://g;' | tr ' ' '\n' | grep include | cut -d ':' -f2 | xargs dig +short txt  | sed 's/"//g; s/ip4://g;' | tr ' ' '\n' | grep '/'


responds with

8.34.208.0/20
8.35.192.0/21
8.35.200.0/23
108.59.80.0/20
108.170.192.0/20
108.170.208.0/21
108.170.216.0/22
108.170.220.0/23
108.170.222.0/24
162.216.148.0/22
162.222.176.0/21
173.255.112.0/20
192.158.28.0/22
199.192.112.0/22
199.223.232.0/22
199.223.236.0/23
23.236.48.0/20
23.251.128.0/19
107.167.160.0/19
107.178.192.0/18

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