Tenant custom made nameservers, if made through the tenant operator, will be accessible to all zones belonging to any account that is part from the tenant. Through API only. Quad9 provides quite capable performance, also, with DNSPerf presently score the service seventh from twelve Public DNS resolvers for regular https://vestacp-install66766.targetblogs.com/27185572/a-secret-weapon-for-postal-smtp-setup