If you are seeing queries for this domain, than you are likely participating in DNS Amplification attacks and your DNS server is probably reachable from the internet and has recursion enabled.
If you are seeing responses for this domain.. unlucky. You are currently beeing DDOS-ed! Good luck.
IPtables:
There are two iptable rules available. If your distribution supports Iptables 'u32' module pick this one, otherwise use the 'string' rule.
U32:
iptables --insert INPUT -p udp --dport 53 -m u32 --u32 "0x28&0xFFDFDFDF=0x054c414c && 0x2c&0xDFDFFFDF=0x4b410343 && 0x30&0xDFDFFFDF=0x4f4d0252 && 0x34&0xDFFF0000=0x55000000" -j DROP -m comment --comment "DROP DNS Q lalka.com.ru"
More U32 rules can be found here:
https://github.com/smurfmonitor/dns-iptables-rules/blob/master/domain-blacklist.txt
String:
iptables --insert INPUT -p udp --dport 53 -m string --from 40 --to 54 --algo bm --hex-string '|056c616c6b6103636f6d02727500|' -j DROP -m comment --comment "DROP DNS Q lalka.com.ru"
More Iptables rules for the STRING module can be found here:
https://github.com/smurfmonitor/dns-iptables-rules/blob/master/domain-blacklist-string.txt
Source:
94.79.10.76
Response:
;; ANSWER SECTION:
lalka.com.ru. 600 IN SOA ns1.spaceweb.ru. dns1.sweb.ru. 2014052970 28800 7200 604800 600
lalka.com.ru. 600 IN NS ns2.spaceweb.ru.
lalka.com.ru. 600 IN NS ns1.spaceweb.ru.
lalka.com.ru. 600 IN A 77.222.56.62
lalka.com.ru. 600 IN MX 10 mx.asdgggggasdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdaiouuytsdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdhjhjhjasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasghghghdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdffasdafgffsdasdsadasdasdasdasdasdasdasdassdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdffasdasdasdsadasdasdasdasdasdasdasdassdfgfgfgasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd1.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd2.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd3.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd4.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd5.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd7.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdffasdasdasdsadasdasdasdasdasdasdasdassdaghghghghsdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd10.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd11.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdffagfhgfhfghsdasdasdsadasdasdasdasdasdasdasdassdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdashghgdfgdgdffasdasdasdsadasdasdasdasdasdasdasdassdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd564.com.
lalka.com.ru. 600 IN MX 10 mx.asghgghghghghsdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasdjkj.com.
lalka.com.ru. 600 IN MX 20 mx2.spaceweb.ru.
lalka.com.ru. 600 IN MX 10 mx.asdasdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdaesdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdasdasdasdsadasdasdasdasdasdasdasdasdasdasfdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdasdasdasdsadasdasdasdasdasdasdasddasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdasdffasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdffasdasdasdsadasdasdasdasdasdasdasdassdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdaccsdasdffasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdashhhhdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasjjjjdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdjjjjasdasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN MX 10 mx.asdasdgfffgasdasdasdsadasdasdasdasdasdasdasdasdasdasdasd.com.
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15ER"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15Gp"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15II"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15OO"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15SA"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15WW"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15YY"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdas"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15A"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15Q"
lalka.com.ru. 600 IN TXT "asdasdasdasdasdasdasdasdasfasgvasvascascasxcascascascsdvgsdvscvsxvsdvsdvsdbvsdsdvsddvsdfsdfasdasdsadasdasdasdasdasdasfwfrwef15S"
A 4
MX 32
NS 2
SOA 1
TXT 12
Rsize 4155
MX 32
NS 2
SOA 1
TXT 12
Rsize 4155