ch.			30 IN SOA a.nic.ch. dns-operation.switch.ch. (
				2024042715 ; serial
				900        ; refresh (15 minutes)
				600        ; retry (10 minutes)
				1209600    ; expire (2 weeks)
				900        ; minimum (15 minutes)
				)

Name servers:
ch.			30 IN NS a.nic.ch.
ch.			30 IN NS d.nic.ch.
ch.			30 IN NS e.nic.ch.
ch.			30 IN NS f.nic.ch.
ch.			30 IN NS b.nic.ch.