v=spf1 ip4:52.103.0.0/17 ip4:104.47.0.0/17 ip4:40.92.0.0/16 ip4:104.47.20.0/23 ip4:104.47.108.0/23 ip4:104.47.75.0/24 ip4:104.47.53.50/24 ip6:2a01:111:f400::/48 ip6:2a01:111:f403::/49 ip6:2a01:111:f403:8000::/50 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 -all