PTR delegation

[Paul Ebersman]

ScottH> Given an ip of 64.84.37.2
ScottH> $dig -x 64.84.37.2
ScottH> 	2.37.84.64.in-addr.arpa. 3589	IN	PTR	capone.hostwizard.com.
ScottH> $dig 37.84.64.in-addr.arpa NS
ScottH> 	37.84.64.in-addr.arpa.	3538	IN	NS	ns1.nacio.com.
ScottH> 	37.84.64.in-addr.arpa.	3538	IN	NS	ns3.nacio.com.
ScottH> 	37.84.64.in-addr.arpa.	3538	IN	NS	ns2.nacio.com.

ScottH> This to me looks like nacio.com in this case is going to control
ScottH> the PTR zones?

Not necessarily. Nacio could be keeping control of the whole zone or
subdelegating parts of that network as it assigns pieces to customers of
theirs (see RFC 2317).

ScottH> I can go to arin.net and do a lookup there, and find that I have
ScottH> been dished out a /26, how do I use dig to get that same answer?

Simple answer is that you can't do it all with dig. You need dig and
whois and some poking around.