eu zone: The server(s) were not responsive to queries over UDP. (2001:978:2:1::93:2)
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
europa.eu/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. (217.32.105.91, UDP_-_EDNS0_4096_D_KN_0x20)