diff --git a/src/RdapDns.php b/src/RdapDns.php
index 40d4386..df3d24e 100644
--- a/src/RdapDns.php
+++ b/src/RdapDns.php
@@ -25,7 +25,7 @@ public function getServerForDomain(string $domain): ?string
                 $tlds = $tldServerProperties[0];
 
                 foreach ($tlds as $tld) {
-                    if (str_ends_with($domain, $tld)) {
+                    if (str_ends_with($domain, ".{$tld}")) {
                         return true;
                     }
                 }