DNS Morons

These people should run Split-horizon DNS;

HostWrong IP addressReason
81.27.252.165.rascom.as20764.net10.6.6.6RFC 1918
cm-84.211.228.153.getinternet.no::84.211.228.153IPv4-Compatible IPv6 Addresses
cm-84.215.150.29.getinternet.no::84.215.150.29IPv4-Compatible IPv6 Addresses
ib2.isp.ozarksgo.net172.20.1.131RFC 1918
ibauhns3.duhosting.ae10.79.128.18RFC 1918
ibauhns4.duhosting.ae10.79.128.22RFC 1918
ibdxbns3.duhosting.ae10.198.18.10RFC 1918
ibdxbns4.duhosting.ae10.198.18.14RFC 1918
ns.baikal-online.RU0.0.0.0Unconfigured
ns.hetsptt.net.cn0.0.0.0Unconfigured
ns.intertns.com0.0.0.0Unconfigured
ns.telenettv.ru192.168.128.197RFC 1918
ns02.foxinc.com10.215.244.27RFC 1918
ns1.intertns.com0.0.0.0Unconfigured
ns1.netplus.co.in64:ff9b::6729:17c2RFC 6052
ns1.reflectivedns.net0.0.0.0Unconfigured
ns2.intertns.com0.0.0.0Unconfigured
ns2.netplus.co.in64:ff9b::6729:17c3RFC 6052
ns2.reflectivedns.net0.0.0.0Unconfigured
ns3.reflectivedns.net0.0.0.0Unconfigured
ns3.tataidc.co.in64:ff9b::6708:2d05RFC 6052
ns4.tataidc.co.in64:ff9b::6708:2e05RFC 6052
nserver.arichwalitservices.net0.0.0.0Unconfigured
rev1.globalrootservers.net0.0.0.0Unconfigured
rev2.globalrootservers.net0.0.0.0Unconfigured
s-dns-cvt2-01.pop.ns.selectel.org172.24.87.66RFC 1918
static-106.121.93.111-tataidc.co.in0.0.0.0Unconfigured
static-118.95.93.111-tataidc.co.in0.0.0.0Unconfigured
static-130.139.143.114-tataidc.co.in0.0.0.0Unconfigured
static-150.240.143.114-tataidc.co.in0.0.0.0Unconfigured
static-162.146.143.114-tataidc.co.in0.0.0.0Unconfigured
static-178.117.93.111-tataidc.co.in0.0.0.0Unconfigured
static-186.34.12.61-tataidc.co.in0.0.0.0Unconfigured
static-20.145.93.111-tataidc.co.in0.0.0.0Unconfigured
static-230.182.143.114-tataidc.co.in0.0.0.0Unconfigured
static-46.4.93.111-tataidc.co.in0.0.0.0Unconfigured
static-46.88.93.111-tataidc.co.in0.0.0.0Unconfigured
static-50.229.143.114-tataidc.co.in0.0.0.0Unconfigured
static-6.17.93.111-tataidc.co.in0.0.0.0Unconfigured

Last update: Mon 18 Jan 07:02:02 UTC 2021

Block

You can block answers like these with Bind's 'deny-answer-addresses' feature;

    deny-answer-addresses {
        // Unconfigured
        0.0.0.0;
        // RFC 1918
        10.0.0.0/8;
        172.16.0.0/12;
        192.168.0.0/16;
        // RFC 3927
        169.254.0.0/16;
        // IPv6
        // :: to ::ffff:ffff:ffff.
        // Includes ::, ::1, IPv4-Compatible IPv6 Addresses ::/96,
        // and IPv4-mapped IPv6 addresses ::ffff:0:0/96
        ::/80;
        // RFC 6052
        64:ff9b::/96;
        // Reserved for Documentation
        2001:db8::/32;
        // IPv6 Unique Local
        fc00::/7;
        // IPv6 Link local
        fe80::/10;
        // IPv6 Site local
        fec0::/10;
        // Your IPv6 address range(s)
        Net/Mask
    } except-from { "Your.Domain"; };
    deny-answer-aliases { "Your.Domain"; };

The produces log entries like;

  Aug 21 19:31:01 sput named[1601]: answer address 10.0.0.100 denied for spacefon.com/A/IN

Not blocking these addresses can be a serious security risk.