$TTL 7200 @ IN SOA ns.hamburg.ccc.de. haegar.ccc.de. ( 2023073001 10800 3600 3600000 86400 ) IN NS ns.hamburg.ccc.de. IN NS ns.vie.ccc.de. ; 2a00:14b0:4200:3000:126::1 1.0.0.0.0.0.0.0.0.0.0.0 IN PTR chaosknoten.hamburg.ccc.de.