diff --git a/apps/production/custom-configs/synapse-values.yaml b/apps/production/custom-configs/synapse-values.yaml
index 962ad34..2a8d172 100644
--- a/apps/production/custom-configs/synapse-values.yaml
+++ b/apps/production/custom-configs/synapse-values.yaml
@@ -18,5 +18,13 @@ data:
         url-previews:
           config: |
             url_preview_enabled: true
+            url_preview_ip_range_blacklist:
+              - '127.0.0.0/8'
+              - '10.0.0.0/8'
+              - '172.16.0.0/12'
+              - '192.168.0.0/16'
+              - '::1/128'
+              - 'fe80::/10'
+              - 'fc00::/7'
             max_spider_size: 10M
             # Deine restlichen URL-Preview und Retention Settings hier...
\ No newline at end of file