dnb.com/A: The Authoritative Answer (AA) flag was not set in the response. See RFC 1035, Sec. 4.1.1. (158.151.208.170, 158.151.208.171, 159.137.178.41, 159.137.178.42, UDP_-_EDNS0_4096_D_KN)
dnb.com/MX: The Authoritative Answer (AA) flag was not set in the response. See RFC 1035, Sec. 4.1.1. (158.151.208.170, 158.151.208.171, 159.137.178.41, 159.137.178.42, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_512_D_KN)
dnb.com/NS: The Authoritative Answer (AA) flag was not set in the response. See RFC 1035, Sec. 4.1.1. (158.151.208.170, 159.137.178.41, 159.137.178.42, UDP_-_EDNS0_4096_D_KN)
dnb.com/SOA: The Authoritative Answer (AA) flag was not set in the response. See RFC 1035, Sec. 4.1.1. (158.151.208.170, 158.151.208.171, 159.137.178.41, 159.137.178.42, TCP_-_EDNS0_4096_D_N, UDP_-_EDNS0_4096_D_KN, UDP_-_EDNS0_4096_D_KN_0x20)
dnb.com/TXT: The Authoritative Answer (AA) flag was not set in the response. See RFC 1035, Sec. 4.1.1. (158.151.208.170, 158.151.208.171, 159.137.178.41, 159.137.178.42, UDP_-_EDNS0_4096_D_KN)
dnb.com/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
dnb.com/AAAA has errors; select the "Denial of existence" DNSSEC option to see them.
dnb.com/CNAME has errors; select the "Denial of existence" DNSSEC option to see them.