add CORS

.hta_slug/dns-tools-get-a-record.php

@@ -68,14 +68,7 @@ $lookupTimeMs = round((microtime(true) - $startTime) * 1000, 2);
 // -------------------------------
 // Resolver info
 // -------------------------------
-$resolver = 'system';
-$resolvConf = '/etc/resolv.conf';
-if (is_readable($resolvConf)) {
-    $content = file_get_contents($resolvConf);
-    if (preg_match('/nameserver\s+([^\s]+)/', $content, $m)) {
-        $resolver = $m[1];
-    }
-}
+$resolver = 'hosting-default';
 
 // -------------------------------
 // Provider detection (heuristic)