; Copyright (C) Internet Systems Consortium, Inc. ("ISC") ; ; This Source Code Form is subject to the terms of the Mozilla Public ; License, v. 2.0. If a copy of the MPL was not distributed with this ; file, You can obtain one at http://mozilla.org/MPL/2.0/. ; ; See the COPYRIGHT file distributed with this work for additional ; information regarding copyright ownership. $TTL 300 . IN SOA marka.isc.org. a.root.servers.nil. ( 2018031400 ; serial 600 ; refresh 600 ; retry 1200 ; expire 600 ; minimum ) . NS a.root-servers.nil. a.root-servers.nil. A 10.53.0.1 example. NS ns2.example. ns2.example. A 10.53.0.2