DNS reverse lookup

[Thor Kottelin]

Martin wrote:

> I want to do a
> reverse DNS lookup.

> I have tried to
> use Windows NT’s  -
> nslookup <ipaddress>.in-addr.arpa

Instead, do nslookup [ipaddress], e.g.:

C:\TEMP>nslookup 204.152.184.101
Server:  smtp3.kolumbus.fi
Address:  193.229.0.40

Name:    www.isc.org
Address:  204.152.184.101


...and you'll be ready to parse. If you want to append the in-addr.arpa
domain, you also need to invert the octet order as well as specify PTR
records:

C:\TEMP>nslookup -q=ptr 101.184.152.204.in-addr.arpa.
Server:  smtp3.kolumbus.fi
Address:  193.229.0.40

Non-authoritative answer:
101.184.152.204.in-addr.arpa    name = www.isc.org

184.152.204.in-addr.arpa        nameserver = ns-ext.vix.com
184.152.204.in-addr.arpa        nameserver = ns1.gnac.com
184.152.204.in-addr.arpa        nameserver = db.rc.vix.com
ns-ext.vix.com  internet address = 204.152.184.64
ns1.gnac.com    internet address = 209.182.195.77
db.rc.vix.com   internet address = 204.152.187.21


I'm holding my breath for someone to pop up and say you should use dig
instead.	:-)

Thor

-- 
Plain old email is very insecure. Please make it
a little safer for yourself and me by using PGP.
FAQ: <URL:http://www.pgp.net/pgpnet/pgp-faq/>.
My public keys are available from key servers.