edu to purdue.edu: Authoritative AAAA records exist for ns3.purdue.edu, but there are no corresponding AAAA glue records. See RFC 1034, Sec. 4.2.2.
edu to purdue.edu: The following NS name(s) were found in the authoritative NS RRset, but not in the delegation NS RRset (i.e., in the edu zone): ns2.rice.edu, ns4.purdue.edu See RFC 1034, Sec. 4.2.2.
edu/DS (alg 8, id 28065): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (192.203.230.10, UDP_-_EDNS0_4096_D_KN)
edu/DS (alg 8, id 28065): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (192.203.230.10, UDP_-_EDNS0_4096_D_KN)