$TTL 86400
@               86400   IN      SOA     dns.mired.edu.    root.dns.mired.edu. (
                        2008032701 ; serial
                        28800 ; refresh
                        14400 ; retry
                        3600000 ; expire
                        0 ; negative cache ttl
                        )

@		IN	NS		dns.mired.edu.
1.12		IN 	PTR		r1.mired.edu.
2.12		IN	PTR		dhcp.mired.edu.
3.12		IN	PTR		http.mired.edu.
10.12		IN 	PTR		dns.mired.edu.
11.13		IN	PTR		pc.mired.edu.
12.14		IN	PTR		mercurio.mired.edu.
13.14		IN	PTR		urano.mired.edu.
14.14		IN	PTR		venus.mired.edu.
