Which lookup tool query both hosts and DNS server?

UNIX Solaris
1

As i understand, host/nslookup/dig only query DNS server to resolve name to ip.

ping can query both, but it seems if ping is blocked, ping won't return IP.

traceroute can query both, but i am not able to test if traceroute is blocked, What is the result?

Neither ping/traceroute is decent tool to do the job,any other ideas?

2

Neither ping nor traceroute query the host you're trying to reach, they too use DNS to resolve the name to an IP.

3

Try this:

#! /usr/bin/perl

printf "%s\n", @ARGV[0];
($name, $aliases, $addrtype, $length, @addrs) = gethostbyname(@ARGV[0]);
foreach $addr (@addrs) {
        ($b1,$b2,$b3,$b4) = unpack('C4',$addr);
        printf "%d.%d.%d.%d \n", $b1,$b2,$b3,$b4;
}
exit 0;
4

getent hosts [hostname]

This will query whatever name resolution you have configured in /etc/nsswitch.conf. ie:

getent hosts mybox