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<p class="MsoNormal"><span lang="EN-US">Why .ws don¡¯t reply NXDOMAIN for non-existent domains, but return a valid A record which rdata is 64.70.19.202?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">An example:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[zhangzaifeng@ip-10-0-0-195 ~]$ dig thisdomainshouldnotexist.ws @8.8.8.8<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">; <<>> DiG 9.7.3-P3-RedHat-9.7.3-8.P3.el6_2.3 <<>> thisdomainshouldnotexist.ws @8.8.8.8<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; global options: +cmd<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; Got answer:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28528<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; QUESTION SECTION:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;thisdomainshouldnotexist.ws. IN A<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; ANSWER SECTION:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">thisdomainshouldnotexist.ws. 299 IN A 64.70.19.202<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; Query time: 312 msec<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; SERVER: 8.8.8.8#53(8.8.8.8)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; WHEN: Tue Mar 22 04:38:12 2016<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">;; MSG SIZE rcvd: 61<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">--------<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Zhang Zaifeng<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Network Security Research Lab, QIHOO 360<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Email: zhangzaifeng@360.cn<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Phone: +86 13520348533<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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