dig

root@xxx:~# cat /etc/resolv.conf
nameserver 192.168.z.y


root@xxx:~# dig @localhost bar
; <<>> DiG 9.7.1-P2 <<>> @localhost bar
; (2 servers found)
;; global options: +cmd
;; connection timed out; no servers could be reached


root@xxx:~# dig @localhost bar.foo.com
; <<>> DiG 9.7.1-P2 <<>> @localhost bar.foo.com
; (2 servers found)
;; global options: +cmd
;; connection timed out; no servers could be reached