Clément Durand wrote, on Tue, 12 Aug 2014 02:25:20 +0000:

That's OK, but often it gives nothing useful.

nslookup is ok, but most of the time, nslookup reports nothing.



tail /proc/net/nf_conntrack|awk '{print $7}'
src=74.125.103.57
src=157.55.135.18
src=173.194.25.148
src=23.235.255.22


tail /proc/net/nf_conntrack|awk '{print $7}'|sed -e 's/src=/nslookup /'
nslookup 74.125.103.57
nslookup 157.55.135.18
nslookup 173.194.25.148
nslookup 23.235.255.22

tail /proc/net/nf_conntrack|awk '{print $7}'|sed -e 's/src=/nslookup /'/tmp/script
chmod u+x /tmp/script
/tmp/script

The result is that all of those IP addresses come up blank with nslookup.

Is there a better Linux command line tool for reverse IP lookups?

NOTE: These are not available on the Ubiquiti Rocket M2 radio.
dig +noall +answer -x 74.125.20.188
host 74.125.20.188
getent hosts 74.125.20.188
nbstat -a 74.125.20.188