some should shut down these nameservers:
dig 3c8.ru any
; <<>> DiG 9.3.4-P1.2 <<>> 3c8.ru any
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37873
;; flags: qr rd ra; QUERY: 1, ANSWER: 10, AUTHORITY: 4, ADDITIONAL: 4
;; QUESTION SECTION:
;3c8.ru. IN ANY
;; ANSWER SECTION:
3c8.ru. 407 IN A 94.102.208.74
3c8.ru. 407 IN A 81.209.164.65
3c8.ru. 407 IN A 85.17.237.5
3c8.ru. 407 IN A 89.200.170.230
3c8.ru. 407 IN A 94.75.216.155
3c8.ru. 407 IN NS ns1.3c8.ru.
3c8.ru. 407 IN NS ns2.3c8.ru.
3c8.ru. 407 IN NS ns3.3c8.ru.
3c8.ru. 407 IN NS ns4.3c8.ru.
3c8.ru. 407 IN SOA 3c8.ru. root.localhost. 2009090419 10800 3600 10800 3600
;; AUTHORITY SECTION:
3c8.ru. 407 IN NS ns4.3c8.ru.
3c8.ru. 407 IN NS ns1.3c8.ru.
3c8.ru. 407 IN NS ns2.3c8.ru.
3c8.ru. 407 IN NS ns3.3c8.ru.
;; ADDITIONAL SECTION:
ns1.3c8.ru. 407 IN A 70.38.48.41
ns2.3c8.ru. 407 IN A 202.65.134.102
ns3.3c8.ru. 407 IN A 67.19.171.210
ns4.3c8.ru. 407 IN A 216.24.153.206