$ttl 300
region.example1.tld.	IN	SOA	ins1.region.example1.tld. it.example1.tld. (
			1532588522
			150
			600
			1200
			300 )
region.example1.tld.				IN	NS	ins1.region.example1.tld.
region.example1.tld.				IN	NS	ins3.region.example1.tld.
region.example1.tld.				IN	NS	ins2.region.example1.tld.
ins1.region.example1.tld.			IN	A	10.1.13.52
ins2.region.example1.tld.			IN	A	10.1.20.64
ins3.region.example1.tld.			IN	A	10.1.38.151
region.example1.tld.				IN	A	10.1.0.1
gfs1.region.example1.tld.			IN	A	10.1.7.126
gfs2.region.example1.tld.			IN	A	10.1.30.10
gfs3.region.example1.tld.			IN	A	10.1.33.49
sql1-db1.region.example1.tld.	5	IN	A	10.1.11.238
nms1.region.example1.tld.			IN	A	10.1.15.4
sql1-db2.region.example1.tld.	5	IN	A	10.1.31.160
sql1-db3.region.example1.tld.	5	IN	A	10.1.37.90
ws1.region.example1.tld.			IN	A	10.1.2.166
sql1-prod.region.example1.tld.	IN	CNAME	sql1-prod-b4efe72d999795b0.target.tld.