talklists at newgeo.com
Wed Jun 3 19:06:16 UTC 2009
On Jun 3, 2009, at 11:53 AM, Scott Haneda wrote:
> Hoping I can get a walk through in simple terms, but also a pointer
> to some docs where I can dive into the details. I think I am
> finding what I want in the docs, but those docs come up 404 since
> the isc site changed things a bit, from there, I generally can not
> locate the old doc file.
> 1) Is it possible to determine what ip range/space has been given to
> user of that IP space? For example, in a colocation environment, I
> am given say, a /24, and I want to look that up and see if it really
> is a /24. I have found the -x option which is making life a lot
> easier to find PTR records.
> 2) Given an IP that does not have a PTR, how do I determine if it
> has been "sub delegated" (?) to the user of that IP? I need to
> learn whether or not I need to contact the IP provider, and ask for
> a PTR record, or if I need to add one in myself.
I was thinking and testing, and I believe I can answer part of my own
question, but please correct and advise where I am wrong.
Given an ip of 220.127.116.11
$dig -x 18.104.22.168
22.214.171.124.in-addr.arpa. 3589 IN PTR capone.hostwizard.com.
So I clearly have a PTR, but I want to see who has been delegated
control of the PTR.
Dropping the trailing 2
$dig 37.84.64.in-addr.arpa NS
37.84.64.in-addr.arpa. 3538 IN NS ns1.nacio.com.
37.84.64.in-addr.arpa. 3538 IN NS ns3.nacio.com.
37.84.64.in-addr.arpa. 3538 IN NS ns2.nacio.com.
This to me looks like nacio.com in this case is going to control the
I can go to arin.net and do a lookup there, and find that I have been
dished out a /26, how do I use dig to get that same answer?
Scott * If you contact me off list replace talklists@ with scott@ *
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