CNAME("a.tile", "dualstack.k.sni.global.fastly.net.", TTL("10m")),
CNAME("b.tile", "dualstack.k.sni.global.fastly.net.", TTL("10m")),
CNAME("c.tile", "dualstack.k.sni.global.fastly.net.", TTL("10m")),
+ // Fastly DNS based ACME Challenge requirement
+ CNAME("_acme-challenge.tile", "bxve5ryiwwv7woiraq.fastly-validations.com.", TTL("10m")),
// Services machine