diff --git a/start.sh b/start.sh
index 09a75af..6f78518 100644
--- a/start.sh
+++ b/start.sh
@@ -44,19 +44,19 @@ for country in $COUNTRIES; do #https://www.ipdeny.com/ipblocks/data/countries/${
     tmp_file="${ZONE_DIR}/${country}.zone.tmp"
     target_file="${ZONE_DIR}/${country}.zone"
 
-if curl -sSf -o "$tmp_file" "$url"; then
-    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 "$target_file"
+    if curl -sSf -o "$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" "$target_file"
+        fi
+    else
+        echo "[$country] Falha no download. Mantendo antigo (se existir)."
+        [ -f "$tmp_file" ] && rm "$tmp_file"
         continue
     fi
-else
-    echo "[$country] Falha no download. Mantendo antigo (se existir)."
-    [ -f "$tmp_file" ] && rm "$tmp_file"
-    continue
-fi
 
     if ipset list "$country" &>/dev/null; then
         echo "[$country] Limpando ipset antigo..."