1; Copyright (C) Internet Systems Consortium, Inc. ("ISC") 2; 3; SPDX-License-Identifier: MPL-2.0 4; 5; This Source Code Form is subject to the terms of the Mozilla Public 6; License, v. 2.0. If a copy of the MPL was not distributed with this 7; file, you can obtain one at https://mozilla.org/MPL/2.0/. 8; 9; See the COPYRIGHT file distributed with this work for additional 10; information regarding copyright ownership. 11 12$ORIGIN . 13$TTL 300 ; 5 minutes 14example IN SOA ns3.example. hostmaster.example. ( 15 2000042795 ; serial 16 20 ; refresh (20 seconds) 17 20 ; retry (20 seconds) 18 1814400 ; expire (3 weeks) 19 3600 ; minimum (1 hour) 20 ) 21example. NS ns3.example. 22ns3.example. A 10.53.0.3 23