Saturday, March 1, 2014



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.


There are two iptable rules available. If your distribution supports Iptables 'u32' module pick this one, otherwise use the 'string' rule.

iptables --insert INPUT -p udp --dport 53 -m u32 --u32 "0x28&0xFFDFDFDF=0x03575757 && 0x2c&0xFFDFDFDF=0x054a5244 && 0x30&0xDFDFFFDF=0x47410449 && 0x34&0xDFDFDFFF=0x4e464f00" -j DROP -m comment --comment "DROP DNS Q"

More U32 rules can be found here:

iptables --insert INPUT -p udp --dport 53 -m string --from 40 --to 56 --algo bm --hex-string '|03777777056a7264676104696e666f00|' -j DROP -m comment --comment "DROP DNS Q"
More Iptables rules for the STRING module can be found here:


Name server:



A 255
Rsize 4112


Domain Name:JRDGA.INFO
Domain ID: D51677779-LRMS
Creation Date: 2014-02-14T04:15:26Z
Updated Date: 2014-02-14T05:01:21Z
Registry Expiry Date: 2015-02-14T04:15:26Z
Sponsoring, LLC (R171-LRMS)
Sponsoring Registrar IANA ID: 146
WHOIS Server:
Referral URL:
Domain Status: clientDeleteProhibited
Domain Status: clientRenewProhibited
Domain Status: clientTransferProhibited
Domain Status: clientUpdateProhibited
Domain Status: serverTransferProhibited
Registrant ID:CR160847378
Registrant Name:li he
Registrant Organization:
Registrant Street: guangdongsheng
Registrant City:guangdongsheng
Registrant State/Province:guangdongsheng
Registrant Postal Code:562633
Registrant Country:CN
Registrant Phone:+86.861254655996
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Admin ID:CR160847380
Admin Name:li he
Admin Organization:
Admin Street: guangdongsheng
Admin City:guangdongsheng
Admin State/Province:guangdongsheng
Admin Postal Code:562633
Admin Country:CN
Admin Phone:+86.861254655996
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Billing ID:CR160847381
Billing Name:li he
Billing Organization:
Billing Street: guangdongsheng
Billing City:guangdongsheng
Billing State/Province:guangdongsheng
Billing Postal Code:562633
Billing Country:CN
Billing Phone:+86.861254655996
Billing Phone Ext:
Billing Fax:
Billing Fax Ext:
Tech ID:CR160847379
Tech Name:li he
Tech Organization:
Tech Street: guangdongsheng
Tech City:guangdongsheng
Tech State/Province:guangdongsheng
Tech Postal Code:562633
Tech Country:CN
Tech Phone:+86.861254655996
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Name Server:NS1.SDFRE.INFO
Name Server:NS2.SDFRE.INFO
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:

Access to AFILIAS WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the Afilias registry database. The data in this record is provided by Afilias Limited for informational purposes only, and Afilias does not guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to(a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Afilias except as reasonably necessary to register domain names or modify existing registrations. All rights reserved. Afilias reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy.

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