; Copyright (C) Internet Systems Consortium, Inc. ("ISC") ; ; SPDX-License-Identifier: MPL-2.0 ; ; 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 https://mozilla.org/MPL/2.0/. ; ; See the COPYRIGHT file distributed with this work for additional ; information regarding copyright ownership. $TTL 300 . IN SOA gson.nominum.com. a.root.servers.nil. ( 2000042100 ; 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 tsigzone. NS ns2.tsigzone. ns2.tsigzone. A 10.53.0.2