eu zone: The server(s) were not responsive to queries over UDP. See RFC 1035, Sec. 4.2. (2001:978:2:1::93:2)
Warnings (7)
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.
europa.eu/DS (alg 8, id 14845): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (185.151.141.1, 2a02:568:fe00::6575, UDP_-_EDNS0_4096_D_KN)
europa.eu/DS (alg 8, id 14845): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (185.151.141.1, 2a02:568:fe00::6575, UDP_-_EDNS0_4096_D_KN)
europa.eu/DS (alg 8, id 6250): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (185.151.141.1, 2a02:568:fe00::6575, UDP_-_EDNS0_4096_D_KN)
europa.eu/DS (alg 8, id 6250): The server appears to support DNS cookies but did not return a COOKIE option. See RFC 7873, Sec. 5.2.3. (185.151.141.1, 2a02:568:fe00::6575, UDP_-_EDNS0_4096_D_KN)
europa.eu/DS has warnings; select the "Denial of existence" DNSSEC option to see them.