#!/bin/bash
check_resolver() {
local ip=$1
response=$(dig @${ip} google.com +short +time=2 +tries=1)
if [[ -n "$response" ]]; then
if [[ $response =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
echo "IP $ip dapat digunakan sebagai DNS resolver. Respon: $response"
else
echo "IP $ip merespon, tetapi tidak memberikan jawaban valid. Respon: $response"
fi
else
echo "IP $ip tidak merespon."
fi
}
read -p "Masukkan subnet (contoh: 103.103.103.0/24): " subnet
if ! command -v ipcalc &>/dev/null; then
echo "ipcalc tidak ditemukan. Menginstalnya..."
sudo apt-get install -y ipcalc
fi
range=$(ipcalc -n $subnet -b | grep -E "^Network:" | awk '{print $2}')
prefix=$(echo $subnet | cut -d'/' -f2)
total_ips=$((2**(32-prefix)))
IFS=. read -r i1 i2 i3 i4 <<<$(echo $range | cut -d'/' -f1)
echo "Mengecek semua IP dalam $subnet..."
for ((i=1; i<=$((total_ips-2)); i++)); do
ip="${i1}.${i2}.${i3}.$((i4+i))"
check_resolver "$ip"
done
By Niammuddin Mz
January 02, 2025
