columbia.edu zone: The server(s) were not responsive to queries over UDP. (2001:550:1:a::d, 2001:550:1:b::d, 2001:978:1:a::d, 2001:978:1:b::d)
columbia.edu/A: No response was received from the server over UDP (tried 12 times). (2001:550:1:a::d, 2001:550:1:b::d, 2001:978:1:a::d, 2001:978:1:b::d, UDP_-_NOEDNS_)
columbia.edu/DNSKEY: The response had an invalid RCODE (FORMERR). (158.143.96.8, UDP_-_EDNS0_512_D_K)
columbia.edu/MX: The response had an invalid RCODE (FORMERR). (158.143.96.8, UDP_-_EDNS0_512_D_K)
columbia.edu/NS: No response was received from the server over UDP (tried 12 times). (2001:550:1:a::d, 2001:550:1:b::d, 2001:978:1:a::d, 2001:978:1:b::d, UDP_-_NOEDNS_)
Warnings (5)
columbia.edu/A: The response had an invalid RCODE (FORMERR) until the COOKIE EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_K)
columbia.edu/MX: The response had an invalid RCODE (FORMERR) until the COOKIE EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_K)
columbia.edu/NS: The response had an invalid RCODE (FORMERR) until the COOKIE EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_K)
columbia.edu/SOA: The response had an invalid RCODE (FORMERR) until the COOKIE EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_K, UDP_-_EDNS0_4096_D_K_0x20)
columbia.edu/TXT: The response had an invalid RCODE (FORMERR) until the COOKIE EDNS option was removed. (158.143.96.8, UDP_-_EDNS0_4096_D_K)