serrano.ch.		30 IN SOA ns1.cyon.ch. server.cyon.ch. (
				2021011877 ; serial
				14400      ; refresh (4 hours)
				1800       ; retry (30 minutes)
				1209600    ; expire (2 weeks)
				3600       ; minimum (1 hour)
				)

serrano.ch.		30 IN TXT "v=spf1 +a +mx +ip4:194.126.200.0/24 +ip4:149.126.0.0/21
-all"

serrano.ch.		30 IN A	149.126.4.20
serrano.ch.		30 IN AAAA 2a01:ab20:0:4::20

Mail exchangers:
serrano.ch.		30 IN MX 0 mail.serrano.ch.

Name servers:
serrano.ch.		30 IN NS ns2.cyon.ch.
serrano.ch.		30 IN NS ns1.cyon.ch.