$ORIGIN 0.168.192.in-addr.arpa.

@			1D IN SOA	gateway.jo.home. jo.gateway.jo.home. (
					42		; serial (d. adams)
					3H		; refresh
					15M		; retry
					1W		; expiry
					1D )		; minimum

			1D IN NS	gateway.jo.home.

1			1D IN PTR	gateway.jo.home.
1			1D IN PTR	mailserver.jo.home.
1			1D IN PTR	nameserver.jo.home.
1			1D IN PTR	proxy.jo.home.
1			1D IN PTR	www.jo.home.
2			1D IN PTR	jo.jo.home.
3			1D IN PTR	nic.jo.home.