$ORIGIN 141.10.in-addr.arpa. $TTL 300 @ IN SOA vidhar.lan.yggdrasil. hostmaster.yggdrasil.li ( 2023022700 ; serial 300 ; refresh 300 ; retry 300 ; expire 300 ; min TTL ) IN NS vidhar.lan.yggdrasil. 1.0 IN PTR vidhar.lan.yggdrasil. 2.0 IN PTR printer.lan.yggdrasil. 1.1 IN PTR vidhar.mgmt.yggdrasil. 2.1 IN PTR switch01.mgmt.yggdrasil. 4.1 IN PTR ap01.mgmt.yggdrasil.