$ORIGIN example.com.
$TTL 3600

@	IN	SOA	dns1.example.com. hostmaster.example.com. (
		2010111217	; serial
		6h		; refresh
		1h		; retry
		1w		; expire
		1d )		; minimum

	NS	dns1

dns1	A	1.2.3.4

abc	NS	a.ns.abc
deleg1	NS	a.ns.abc
deleg2	NS	a.ns.ns.ns.ns.xyz

; wildcard glue

*.ns.abc	AAAA	::1
*.ns.xyz	AAAA	::2