diff --git a/host2ip.sh b/host2ip.sh
index 4f99ec9..f75bbab 100755
--- a/host2ip.sh
+++ b/host2ip.sh
@@ -17,6 +17,11 @@ do
    # name=$(nslookup $ip| grep "name ="|sed 's/.*=//')
    # Uncomment following line to use dig (thanks to Charles Duffy)
    #name=$(dig +short -x $ip)i
+   if [ -z "$2"]
+   then
    resolvedIP=$(dig +short "$ip")
+   else
+   resolvedIP=$(dig +short "$ip" "$2")
+   fi
    [[ -z "$resolvedIP" ]] && echo "$ip" lookup failure || echo "$ip" resolved to "$resolvedIP"
 done < $1