diff --git a/runtime/lib/resolve-nextcloud-target.php b/runtime/lib/resolve-nextcloud-target.php
new file mode 100644
index 0000000..52b4d1b
--- /dev/null
+++ b/runtime/lib/resolve-nextcloud-target.php
@@ -0,0 +1,24 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "CLI only\n");
+  exit(1);
+}
+
+require_once(dirname(__DIR__, 2).'/include/nc_transport.inc.php');
+
+try
+{
+  if ($argc !== 2) throw new RuntimeException('Aufruf: resolve-nextcloud-target.php <nextcloud-url>');
+  $url = rtrim(trim((string)$argv[1]), '/');
+  bratonien_tools_nc_transport_scheme($url);
+  $host = bratonien_tools_nc_transport_host($url);
+  echo bratonien_tools_nc_transport_public_ip($host)."\n";
+  exit(0);
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, $e->getMessage()."\n");
+  exit(1);
+}