diff --git a/hsarback/src/de/hsadmin/core/util/IPv6Trick.java b/hsarback/src/de/hsadmin/core/util/IPv6Trick.java
index 1bc578b..abecded 100644
--- a/hsarback/src/de/hsadmin/core/util/IPv6Trick.java
+++ b/hsarback/src/de/hsadmin/core/util/IPv6Trick.java
@@ -14,7 +14,7 @@ public class IPv6Trick {
 
 	private static final String IPv4_83_223_78 = "83.223.78"; 	// e-Shelter Berlin
 	private static final String IPv4_83_223_94 = "83.223.94"; 	// e-Shelter Berlin
-	private static final String IPv6_PREFIX_ES = "2a01:37:2000::1";
+	private static final String IPv6_PREFIX_ES = "2a01:37:3000::1";
 
 	
 	public static String convertIPv4ToIPv6(final String ipv4address) throws ProcessorException {