--- /dev/null
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2018 GNUnet e.V.
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+/**
+ * @file gns/gnunet-service-gns.h
+ * @brief GNU Name System (main service)
+ * @author Martin Schanzenbach
+ * @author Christian Grothoff
+ */
+
+#ifndef GNUNET_SERVICE_GNS_H
+#define GNUNET_SERVICE_GNS_H
+
+/**
+ * Find GNS zone belonging to TLD @a tld.
+ *
+ * @param tld_str top-level domain to look up
+ * @param[out] pkey public key to set
+ * @return #GNUNET_YES if @a tld was found #GNUNET_NO if not
+ */
+int
+GNS_find_tld (const char *tld_str,
+ struct GNUNET_CRYPTO_EddsaPublicKey *pkey);
+
+#endif