$ORIGIN 27.172.in-addr.arpa. $TTL 86400 @ 1D IN SOA ns1.wLeiden.NET. hostmaster.wLeiden.NET. ( 2004041501 ; 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 0.0 PTR network-Kaag.wLeiden.NET. 1.0 PTR CNodeKaag.wLeiden.NET. $GENERATE 10-62 $.0 PTR dhcp$.CNodeKaag.wLeiden.NET. 65.0 PTR ethernet.CNodeKaag.wLeiden.NET. 0.8 PTR network-Kaag2.wLeiden.NET. 1.8 PTR CNodeKaag2.wLeiden.NET. $GENERATE 10-62 $.8 PTR dhcp$.CNodeKaag2.wLeiden.NET. 65.8 PTR ethernet.CNodeKaag2.wLeiden.NET.