diff --git a/start.sh b/start.sh
index 6f78518..6b4ded4 100644
--- a/start.sh
+++ b/start.sh
@@ -45,12 +45,12 @@ for country in $COUNTRIES; do #https://www.ipdeny.com/ipblocks/data/countries/${
     target_file="${ZONE_DIR}/${country}.zone"
 
     if curl -sSf -o "$tmp_file" "$url"; then
-        if [ -f "$target_file" ] && cmp -s "$tmp_file" "$target_file"; then
-            echo "[$country] Arquivo inalterado."
-            rm "$tmp_file"
-        else
-            echo "[$country] Atualizando IPs."
-            mv "$tmp_file" "$target_file"
+        grep -Eo '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+(/[0-9]+)?$' "$tmp_file" > "$target_file"
+        rm "$tmp_file"
+        if [ ! -s "$target_file" ]; then
+            echo "[$country] Lista filtrada vazia, ignorando atualização."
+            rm "$target_file"
+            continue
         fi
     else
         echo "[$country] Falha no download. Mantendo antigo (se existir)."