ru/DNSKEY: No response was received from the server over UDP (tried 4 times). See RFC 1035, Sec. 4.2. (193.232.142.17, 2001:678:15:0:193:232:142:17, UDP_-_EDNS0_512_D_KN)
ru/DNSKEY has errors; select the "Denial of existence" DNSSEC option to see them.