diff --git a/src/main/java/de/hsfulda/informatik/LdapSync.java b/src/main/java/de/hsfulda/informatik/LdapSync.java
index 7b101b6..fc2f8d7 100644
--- a/src/main/java/de/hsfulda/informatik/LdapSync.java
+++ b/src/main/java/de/hsfulda/informatik/LdapSync.java
@@ -25,7 +25,8 @@ import java.util.stream.Collectors;
  */
 public class LdapSync {
     private final Properties properties = new Properties();
-    private final static Pattern pattern = Pattern.compile("^fd([a-z][a-z])?([0-9]*?)$");
+    private final static Pattern legacyPattern = Pattern.compile("^fd([a-z][a-z])?([0-9]*?)$");
+    private final static Pattern newPattern = Pattern.compile("^fd([0-9][0-9][0-9][0-9][0-9][0-9][0-9])$");
     private Map<String, Integer> userDefinedMappings = Collections.emptyMap();
 
     public LdapSync() throws IOException, LDAPException, GeneralSecurityException {
@@ -150,7 +151,13 @@ public class LdapSync {
             return mappings.get(cn);
         }
 
-        final Matcher m = pattern.matcher(cn);
+        final Matcher x = newPattern.matcher(cn);
+
+        if (x.find()) {
+            return 270000000 + Integer.parseInt(x.group(1));
+        }
+
+        final Matcher m = legacyPattern.matcher(cn);
 
         if (m.find()) {
             int a = 0;
diff --git a/src/test/java/de/hsfulda/informatik/LdapSyncTest.java b/src/test/java/de/hsfulda/informatik/LdapSyncTest.java
index c0612b6..3f7ee27 100644
--- a/src/test/java/de/hsfulda/informatik/LdapSyncTest.java
+++ b/src/test/java/de/hsfulda/informatik/LdapSyncTest.java
@@ -96,6 +96,8 @@ public class LdapSyncTest {
         assertEquals(10149999, (int) LdapSync.computeUid("fdaa9999"));
         assertEquals(262641000, (int) LdapSync.computeUid("fdzz1000"));
         assertEquals(262649999, (int) LdapSync.computeUid("fdzz9999"));
+        assertEquals(270000001, (int) LdapSync.computeUid("fd0000001"));
+        assertEquals(279999999, (int) LdapSync.computeUid("fd9999999"));
 
         // test user defined mappings
         Map<String, Integer> mappings;