eu zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2001:978:2:1::93:2)
europa.eu zone: The server(s) were not responsive to queries over TCP. See RFC 1035, Sec. 4.2. (54.154.94.36, 2a05:d018:c5f:3701:cc8a:9177:b28:c034)
europa.eu/SOA: No response was received from the server over TCP (tried 3 times). See RFC 1035, Sec. 4.2. (54.154.94.36, 2a05:d018:c5f:3701:cc8a:9177:b28:c034, TCP_-_EDNS0_4096_D_N)
Warnings (2)
eu to europa.eu: The following NS name(s) were found in the authoritative NS RRset, but not in the delegation NS RRset (i.e., in the eu zone): ns4az2.europa.eu See RFC 1034, Sec. 4.2.2.
eu to europa.eu: The following NS name(s) were found in the delegation NS RRset (i.e., in the eu zone), but not in the authoritative NS RRset: ans1.cw.net, ans2.cw.net See RFC 1034, Sec. 4.2.2.