nslookup: something strange

["Paolo Pantaleo" <paolopantaleo@gmail.com>]

is this normal?

> paolo@wood:~$ nslookup
> 167.34.4.12
Server:         172.18.4.1
Address:        172.18.4.1#53

** server can't find 12.4.34.167.in-addr.arpa: NXDOMAIN


it works ok for direct queries
> www.google.com
Server:         172.18.4.1
Address:        172.18.4.1#53

Non-authoritative answer:
www.google.com  canonical name = www.l.google.com.
Name:   www.l.google.com
Address: 66.249.85.104
Name:   www.l.google.com
Address: 66.249.85.99

PAolo

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