$ORIGIN 31.172.in-addr.arpa.
$TTL 86400
@	1D IN SOA	ns1.wLeiden.NET. hostmaster.wLeiden.NET. (
			20031025	; serial (d. adams)
			3H		; refresh
			15M		; retry
			1W		; expiry
			1D )		; minimum

$INCLUDE        wleiden/ns-172      @                                                   

0.0		PTR	network.wLeiden.NET.

1.255		PTR	proxy.wleiden.net.
2.255		PTR	link2proxy.wleiden.net.
3.255		PTR	link3proxy.wleiden.net.
4.255		PTR	link4proxy.wleiden.net.