digsys.o.bg	IN	NS	ns.digsys.bg.
digsys.o.bg	IN	NS	ns2.digsys.bg.
dnssec.o.bg	IN	NS	ns.digsys.bg.
dnssec.o.bg	IN	NS	ns2.digsys.bg.
sim.o.bg	IN	NS	redirns1.bgdns.net.
sim.o.bg	IN	NS	redirns2.bgdns.net.