diff --git a/src/Service/RDAPService.php b/src/Service/RDAPService.php
index 1802751..c73110e 100644
--- a/src/Service/RDAPService.php
+++ b/src/Service/RDAPService.php
@@ -509,7 +509,7 @@ readonly class RDAPService
 
         $entity->setHandle($rdapEntity['handle']);
 
-        if (array_key_exists('remarks', $rdapEntity) && is_array($rdapEntity['remarks']) && !in_array($rdapEntity['handle'], self::IANA_RESERVED_IDS)) {
+        if (array_key_exists('remarks', $rdapEntity) && is_array($rdapEntity['remarks']) && !is_int($rdapEntity['handle'])) {
             $entity->setRemarks($rdapEntity['remarks']);
         }