DNS Morons

These people should run Split-horizon DNS;

HostWrong IP addressReason
bos1.helixdns.net0.0.0.0Unconfigured
bos2.helixdns.net0.0.0.0Unconfigured
dns.btcl.net.bdfe80::1618:77ff:fe6d:264aIPv6 Link local
ibdxbns3.duhosting.ae10.198.18.10RFC 1918
ibdxbns4.duhosting.ae10.198.18.14RFC 1918
mail.pi-walker.defe80::7285:c2ff:feff:4a48IPv6 Link local
noctis.a2hosting.com10.34.7.249RFC 1918
ns.baikal-online.ru0.0.0.0Unconfigured
ns.hetsptt.net.cn0.0.0.0Unconfigured
ns02.foxinc.com10.215.244.27RFC 1918
ns1.amistrcap.com0.0.0.0Unconfigured
ns1.axis-mobile.net0.0.0.0Unconfigured
ns1.itdeluxe.com::1IPv6 Localhost
ns1.loxleybb.com192.168.200.251RFC 1918
ns2.amistrcap.com0.0.0.0Unconfigured
ns2.axis-mobile.net0.0.0.0Unconfigured
ns2.cmt.net.br10.1.0.54RFC 1918
ns2.genesee.edu192.168.200.223RFC 1918
ns2.itdeluxe.com::1IPv6 Localhost
ns3.tataidc.co.in64:ff9b::6708:2d05RFC 6052
ns4.tataidc.co.in64:ff9b::6708:2e05RFC 6052
ns5.tataidc.co.in64:ff9b::6708:2c05RFC 6052
s-dns-cvt2-01.pop.ns.selectel.org172.24.87.66RFC 1918
servers.czfe80::20c:29ff:fe12:4873IPv6 Link local
slave.btcl.net.bdfe80::1618:77ff:fe6d:1e60IPv6 Link local
static-158.180.143.114-tataidc.co.in0.0.0.0Unconfigured
static-194.186.93.111-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-56.163.93.111-tataidc.co.in0.0.0.0Unconfigured

Last update: Fri 7 Aug 06:02:01 UTC 2020

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.