diff --git a/main.go b/main.go
index 7f0577c..50c8c38 100644
--- a/main.go
+++ b/main.go
@@ -95,7 +95,7 @@ func main() {
 
 	// Admin load all blocklists (on demand or scheduled)
 	go func() {
-		if getenv("IMPORT_RIRS", "1") == "1" {
+		if getenv("IMPORT_RIRS", "0") == "1" {
 			log.Println("Lade IP-Ranges aus RIRs...")
 			if err := importRIRDataToRedis(); err != nil {
 				log.Fatalf("import error: %v", err)
@@ -193,38 +193,40 @@ func supernets(ip netip.Addr) []string {
 }
 
 func checkIP(ip netip.Addr, cats []string) ([]string, error) {
+	// 1) Cache-Treffer?
 	if res, ok := ipCache.Get(ip.String()); ok {
 		hits.Add(1)
 		return res, nil
 	}
 
+	// 2) alle Supernetze der IP (≤32 bzw. ≤128 Stück)
 	supers := supernets(ip)
-	pipe := rdb.Pipeline()
-	cmds := make([]*redis.IntCmd, 0, len(cats)*len(supers))
 
-	// *einen* Redis-Roundtrip bauen
-	for _, cat := range cats {
-		for _, pfx := range supers {
-			key := "bl:" + cat + ":" + pfx
-			cmds = append(cmds, pipe.Exists(ctx, key))
+	// 3) Pipeline – jeweils *eine* EXISTS-Abfrage pro Kategorie
+	pipe := rdb.Pipeline()
+	existsCmds := make([]*redis.IntCmd, len(cats))
+
+	for i, cat := range cats {
+		keys := make([]string, len(supers))
+		for j, pfx := range supers {
+			keys[j] = "bl:" + cat + ":" + pfx
 		}
+		existsCmds[i] = pipe.Exists(ctx, keys...)
 	}
+
 	if _, err := pipe.Exec(ctx); err != nil && err != redis.Nil {
 		return nil, err
 	}
 
+	// 4) Ergebnis auswerten
 	matches := make([]string, 0, len(cats))
-	idx := 0
-	for _, cat := range cats {
-		for range supers {
-			if cmds[idx].Val() == 1 {
-				matches = append(matches, cat)
-				break // Kategorie gefunden → nächste
-			}
-			idx++
+	for i, cat := range cats {
+		if existsCmds[i].Val() > 0 {
+			matches = append(matches, cat)
 		}
 	}
 
+	// 5) Cache befüllen und zurück
 	misses.Add(1)
 	ipCache.Add(ip.String(), matches)
 	return matches, nil