diff --git a/lib/Service/LDAPConnectionService.php b/lib/Service/LDAPConnectionService.php
index f7609941af21cc77e50b6ec2de74a61732f0fa0f..75bead435a4c2c8e0d5ac97965c248fd66c28184 100644
--- a/lib/Service/LDAPConnectionService.php
+++ b/lib/Service/LDAPConnectionService.php
@@ -122,4 +122,41 @@ class LDAPConnectionService {
 
 		$this->closeLDAPConnection($conn);
 	}
+	
+	/**
+	 * Method getCreateTimestamp
+	 *
+	 * @param string $username [explicite description]
+	 *
+	 * @return string
+	 */
+	public function getCreateTimestamp(string $username): ?string {
+		try {
+			$conn = $this->getLDAPConnection();
+			$baseDn = implode(',', $this->getLDAPBaseUsers());
+			$filter = sprintf('(username=%s)', ldap_escape($username, '', LDAP_ESCAPE_FILTER));
+			$attributes = ['createTimestamp'];
+
+			$search = ldap_search($conn, $baseDn, $filter, $attributes);
+			if (!$search) {
+				throw new Exception("LDAP search failed for user: $username");
+			}
+
+			$entries = ldap_get_entries($conn, $search);
+			$this->closeLDAPConnection($conn);
+
+			if ($entries['count'] === 0 || empty($entries[0]['createtimestamp'][0])) {
+				return null;
+			}
+
+			// Format: 20220817084557Z -> 2022-08-17 08:45:57
+			$raw = $entries[0]['createtimestamp'][0];
+			$date = \DateTime::createFromFormat('YmdHis\Z', $raw);
+			return $date ? $date->format('Y-m-d H:i:s') : null;
+		} catch (Exception $e) {
+			// Log or handle error as needed
+			return null;
+		}
+	}
+
 }