33.in-addr.arpa	IN	NS	con1r.nipr.mil
33.in-addr.arpa	IN	NS	con2r.nipr.mil
33.in-addr.arpa	IN	NS	eur1r.nipr.mil
33.in-addr.arpa	IN	NS	eur2r.nipr.mil
33.in-addr.arpa	IN	NS	pac1r.nipr.mil
33.in-addr.arpa	IN	NS	pac2r.nipr.mil