Re: Understanding reverse DNS better

2011-01-25 Thread Hank Nussbacher
On 2011-01-25 17:21, Jethro R Binks wrote: > On Tue, 25 Jan 2011, Larry Smith wrote: > >> I use Squish (www.squish.net/dnscheck) for this purpose. Reasonable web >> interface and gives lots of info about where things are breaking down... >> >> -- >> Larry Smith > > squish.net/dnscheck is great,

Re: Understanding reverse DNS better

2011-01-25 Thread Hank Nussbacher
At 08:47 25/01/2011 -0600, Larry Smith wrote: I use Squish (www.squish.net/dnscheck) for this purpose. Reasonable web interface and gives lots of info about where things are breaking down... Seems to be having issues: Finding servers for . from A.ROOT-SERVERS.NET (198.41.0.4) Error:

Re: Understanding reverse DNS better

2011-01-25 Thread Jeroen Massar
On 2011-01-25 17:21, Jethro R Binks wrote: > On Tue, 25 Jan 2011, Larry Smith wrote: > >> I use Squish (www.squish.net/dnscheck) for this purpose. Reasonable web >> interface and gives lots of info about where things are breaking down... >> >> -- >> Larry Smith > > squish.net/dnscheck is great

Re: Understanding reverse DNS better

2011-01-25 Thread Jethro R Binks
On Tue, 25 Jan 2011, Larry Smith wrote: > I use Squish (www.squish.net/dnscheck) for this purpose. Reasonable web > interface and gives lots of info about where things are breaking down... > > -- > Larry Smith squish.net/dnscheck is great, except when I've had problems with it, or wanted a s

Re: Understanding reverse DNS better

2011-01-25 Thread Larry Smith
I use Squish (www.squish.net/dnscheck) for this purpose. Reasonable web interface and gives lots of info about where things are breaking down... -- Larry Smith lesm...@ecsis.net On Tue January 25 2011 08:38, p8x wrote: > +1, also a quick check to make sure your name servers are actually set > c

Re: Understanding reverse DNS better

2011-01-25 Thread Caleb Tennis
Excellent, the +trace option is most helpful, thank you. On Jan 25, 2011, at 9:34 AM, Jared Mauch wrote: > I suggest doing something like: > > dig +trace -x 204.42.254.5 > > You can watch the delegation authority for the in-addr at each stage. > > - Jared > > On Jan 25, 2011, at 9:30 AM, Cale

Re: Understanding reverse DNS better

2011-01-25 Thread p8x
+1, also a quick check to make sure your name servers are actually set can be done with host.. host -t ns 0.168.192.in-addr.arpa On 25/01/2011 10:34 PM, Jared Mauch wrote: I suggest doing something like: dig +trace -x 204.42.254.5 You can watch the delegation authority for the in-addr at e

Re: Understanding reverse DNS better

2011-01-25 Thread Jared Mauch
I suggest doing something like: dig +trace -x 204.42.254.5 You can watch the delegation authority for the in-addr at each stage. - Jared On Jan 25, 2011, at 9:30 AM, Caleb Tennis wrote: > We have a /24 from one of our upstream providers that we handoff to a > customer. The /24 has been SWIPd

Understanding reverse DNS better

2011-01-25 Thread Caleb Tennis
We have a /24 from one of our upstream providers that we handoff to a customer. The /24 has been SWIPd to us, and we have nameservers setup with ARIN against that record. Twice now this information has just "disappeared". That is, if do reverse DNS lookups, they returns nothing, whereas they