$TTL 60000
@ IN SOA 50.40.30.in-addr.arpa. nobody.nowhere. (
1 ; serial
28 ; refresh
14 ; retry
3600000 ; expire
0 ; negative cache ttl
)
@ IN NS 253.50.40.30.in-addr.arpa.
253.50.40.30.in-addr.arpa. IN A 30.40.50.253
253 PTR dnscom.com.