DNS

References

• Microsoft Technet — Resource records reference

A DNS database consists of one or more zone files used by the DNS server. Each zone holds a collection of structured resource records, the following of which are supported by the DNS Server service.

• Microsoft Technet — Understanding DNS

How DNS works.

• DNS-HOWTO

Detailed explanations on how DNS work, applied to Linux.

• zytrax open — Chapter 8. DNS Resource Records (RRs)

How-to

Reverse DNS lookup

Use option -x of dig command:

dig +short -x 82.78.227.176
# 176.176-191.227.78.82.in-addr.arpa.
# ivorde.ro.

Or query record PTR in in-addr.arpa domain:

dig +short ptr 176.227.78.82.in-addr.arpa.
# 176.176-191.227.78.82.in-addr.arpa.
# ivorde.ro.