$ORIGIN 24.172.in-addr.arpa. $TTL 86400 @ 1D IN SOA ns1.wLeiden.NET. hostmaster.wLeiden.NET. ( 2004111301 ; serial (d. adams) 3H ; refresh 15M ; retry 1W ; expiry 1D ) ; minimum IN NS ns1.wLeiden.NET. IN NS ns2.wLeiden.NET. IN NS ns3.wLeiden.NET. IN NS ns4.wLeiden.NET. ns1 IN A 172.18.8.66 ;tango ns2 IN A 172.17.8.68 ;proxy1 ns3 IN A 172.17.143.4 ;proxy2 ns4 IN A 172.20.128.98 ;proxy4 0.16 PTR network-grafical.wLeiden.NET. 1.16 PTR CNodeGraficall.wLeiden.NET. $GENERATE 10-62 $.16 PTR dhcp$.CNodeGraficall.wLeiden.NET. 65.16 PTR ethernet.CNodeGraficall.wLeiden.NET.