DNS Morons

These people should run Split-horizon DNS;

HostWrong IP addressReason
abts-kk-dynamic-137.173.171.122-airtelbroadband.in0.0.0.0Unconfigured
dns1.srv.nuigalway.ie172.16.7.142RFC 1918
dracon.hts.ru10.0.17.89RFC 1918
gm.puntonet.ec10.237.12.2RFC 1918
ibauhns3.duhosting.ae10.79.128.18RFC 1918
ibdxbns4.duhosting.ae10.198.18.14RFC 1918
int-amer.dell.com10.172.130.18RFC 1918
int-amer.dell.com10.174.129.162RFC 1918
nameserver.juet.ac.in192.168.4.196RFC 1918
ns.hetsptt.net.cn0.0.0.0Unconfigured
ns1.comeconnect.com64:ff9b::caa4:2051RFC 6052
ns1.loxleybb.com192.168.200.251RFC 1918
ns1.motianya.com192.168.1.1RFC 1918
ns1.netplus.co.in64:ff9b::6729:17c2RFC 6052
ns15.sitesazstudio.com192.168.59.17RFC 1918
ns16.sitesazstudio.com192.168.59.17RFC 1918
ns1edu.wifi.edu.sk10.255.243.67RFC 1918
ns2.comeconnect.com64:ff9b::caa4:2052RFC 6052
ns2.motianya.com192.168.1.1RFC 1918
ns2.netplus.co.in64:ff9b::6729:17c3RFC 6052
ns2.parspack.co10.201.2.199RFC 1918
ns3.tataidc.co.in64:ff9b::6708:2d05RFC 6052
ns4.tataidc.co.in64:ff9b::6708:2e05RFC 6052
ns5.tataidc.co.in64:ff9b::6708:2c05RFC 6052
static-230.139.143.114-tataidc.co.in0.0.0.0Unconfigured
static-35.24.143.114-tataidc.co.in0.0.0.0Unconfigured

Last update: Fri 6 Dec 07:02:01 UTC 2019

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.