[ale] null.null.host oddity

[Geoffrey]

John Wells wrote:
> Geoffrey said:
> 
>>;; ANSWER SECTION:
>>1.2.16.172.in-addr.arpa. 10800	IN	PTR	host1-null.null.bellsouth.net.
>>
>>;; AUTHORITY SECTION:
>>16.172.in-addr.arpa.	10800	IN	NS	ns.asm.bellsouth.net.
>>
>>;; ADDITIONAL SECTION:
>>ns.asm.bellsouth.net.	7313	IN	A	205.152.37.254
> 
> 
> Exactly.  Which leads me to believe that speedfactory uses 205.152.37.254
> (one  of BS's main DNS servers) as to refer your query to when it misses
> it their hosted sites or caches..  So, when you hit speedfactory's DNS and
> the query fails there, it's by default referred to BS's server.

Okay, so you did a dig against host1-null.null.bellsouth.net to get 
172.16.2.1??  Could it be that the speedfactory DNS is down the tree 
from the BS dns?  In other words, the BS DNS sits between the 
speedfactory dns and the root servers?

> The only time you're likely to see these entries are when you're on a
> network that's in some way served by BS's DNS, as these particular DNS
> servers are only used for BS ISP customers and access is pretty much
> denied to anyone else.  So, indirectly, you're still using BS for quite a
> bit, however you might hate that ;-).

I'll have to check this out, I'm wondering if this isn't a symptom of 
the recent network problems we've seen.  I just tried the 'dig' again, 
and received no reference to the bellsouth nameserver.


-- 
Until later: Geoffrey		esoteric at 3times25.net

The latest, most widespread virus?  Microsoft end user agreement.
Think about it...

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