Actually, from RFC 1035, section 5.1: "If an entry for an RR begins with a blank, then the RR is assumed to be owned by the last stated owner." https://www.ie

Actually, from RFC 1035, section 5.1: "If an entry for an RR begins with a blank, then the RR is assumed to be owned by the last stated owner." https://www.ietf.org/rfc/rfc1035.txt https://www.ietf.org/rfc/rfc1035.txt