kpn-gprs.nl.		30 IN SOA ns1.kpn.net. zonemaster.kpn.com. (
				2021070901 ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

Name servers:
kpn-gprs.nl.		30 IN NS ns11.kpn.net.
kpn-gprs.nl.		30 IN NS ns1.kpn.net.