./DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (192.112.36.4, UDP_-_EDNS0_512_D_KN)
Warnings (3)
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: Authoritative AAAA records exist for ns4.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 See RFC 1034, Sec. 4.2.2.