$ORIGIN 174.140.in-addr.arpa.
135		IN	SOA	135.174.140.in-addr.arpa. postmaster.smnet1.co.sanmateo.ca.us. (
		100000 10800 1800 3600000 86400 )
		IN	NS	smnet1.co.sanmateo.ca.us.
$ORIGIN co.sanmateo.ca.us.
smnet1		IN	A	140.174.135.67
$ORIGIN 174.140.in-addr.arpa.
135		IN	NS	pandora.sf.ca.us.
$ORIGIN sf.ca.us.
pandora		IN	A	192.190.111.22
$ORIGIN 135.174.140.in-addr.arpa.
2		IN	PTR	cisco4000.co.sanmateo.ca.us.
67		IN	PTR	smnet1.co.sanmateo.ca.us.
1		IN	PTR	cisco2500.co.sanmateo.ca.us.