he.net zone: The server(s) were not responsive to queries over TCP. See RFC 1035, Sec. 4.2. (216.66.80.18)
he.net/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (216.66.80.18, UDP_-_EDNS0_512_D_KN)
he.net/DNSKEY: The UDP connection was refused (ECONNREFUSED). See RFC 1035, Sec. 4.2. (216.66.80.18, UDP_-_EDNS0_4096_D_KN)
he.net/SOA: The TCP connection was refused (ECONNREFUSED). See RFC 1035, Sec. 4.2. (216.66.80.18, TCP_-_EDNS0_4096_D_N)
he.net/SOA: The UDP connection was refused (ECONNREFUSED). See RFC 1035, Sec. 4.2. (216.66.80.18, UDP_-_EDNS0_4096__0x20)
he.net/NSEC3PARAM has errors; select the "Denial of existence" DNSSEC option to see them.
he.net/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.
Warnings (3)
he.net/AAAA: No response was received from the server over UDP (tried 11 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). See RFC 6891, Sec. 6.1.2. (216.66.80.18, UDP_-_EDNS0_4096_D_KN)
he.net/SOA: No response was received until the UDP payload size was decreased, indicating that the server might be attempting to send a payload that exceeds the path maximum transmission unit (PMTU) size. See RFC 6891, Sec. 6.2.6. (216.66.80.18, UDP_-_EDNS0_4096_D_KN)
he.net/TXT: No response was received from the server over UDP (tried 6 times) until the COOKIE EDNS option was removed (however, this server appeared to respond legitimately to other queries with the COOKIE EDNS option present). See RFC 6891, Sec. 6.1.2. (216.66.80.18, UDP_-_EDNS0_4096_D_KN)