knut.work. 3600 IN SOA ns1.kserver.biz. dns.ahlers.me. 1 7200 900 1209600 86400 knut.work. 3600 IN NS ns1.kserver.biz. knut.work. 3600 IN NS ns2.kserver.biz. knut.work. 3600 IN NS ns3.kserver.biz.