#!/bin/bash

echo ""
echo "Plage $1 - Enregistrements DNS"
echo ""

for ip in $(nmap -n -sL $1 | awk '/Nmap scan report/{print $NF}') ; do
    name=$(host $ip | grep "domain name pointer" | cut -d " " -f 5)
    if [[ ! -z $name ]] ; then
        echo -e "$ip:\t $name"
    else
        dispo="$dispo\n$ip"
    fi
done

echo ""
echo -n "On affiche la liste des IPs sans record ? (o/N) : " ; read reponse
if  [[ $reponse == "o" ]] || [[ $reponse == "O" ]] ; then
	echo "Liste des IPs sans record :"
	echo -e $dispo	
fi

echo ""