pn.to.			3599 IN	SOA ns1.pn.to. domain.pn.to. (
				2021012701 ; serial
				86400      ; refresh (1 day)
				5400       ; retry (1 hour 30 minutes)
				3600000    ; expire (5 weeks 6 days 16 hours)
				10800      ; minimum (3 hours)
				)

pn.to.			3599 IN	TXT "v=spf1 +ip4:160.16.60.180 +ip6:2001:e42:102:1506:160:16:60:180
-all"

Mail exchangers:
pn.to.			3599 IN	MX 10 sv1.pn.to.
pn.to.			3599 IN	MX 20 sv2.pn.to.

Name servers:
pn.to.			3599 IN	NS ns1.pn.to.
pn.to.			3599 IN	NS ns2.pn.to.