Need help explaining in-addr.arpa to Limelight

Tue Oct 24 18:15:13 UTC 2006

On Tue, Oct 24, 2006 at 09:40:24AM -0400, Tuc at T-B-O-H.NET wrote:
...
> 	The issue still stands though, that according to my
> latest dig +trace of it, I see :
> 
> 185.28.69.in-addr.arpa. 86400   IN      NS      dns.iad.llns.net.
> 185.28.69.in-addr.arpa. 86400   IN      NS      dns.lax.llns.net.
> 185.28.69.in-addr.arpa. 86400   IN      NS      dns.lga.llns.net.
> 185.28.69.in-addr.arpa. 86400   IN      NS      dns.sjc.llns.net.
> ;; Received 138 bytes from 192.35.51.32#53(dill.ARIN.NET) in 2880 ms
> 
> 185.28.69.in-addr.arpa. 7200    IN      SOA     ns8.zoneedit.com. soacontact.zoneedit.com. 1115928761 14400 7200 950400 7200
> ;; Received 105 bytes from 69.28.156.99#53(dns.iad.llns.net) in 970 ms
> 
> 	Which still is wrong I believe. If nothing else, it
> should point to the ns13 and ns8 servers at zoneedit.com .
...

What they APPEAR to be doing is delegating, individually, each element
of 0.185.28.69.in-addr.arpa - 255.185.28.69.in-addr.arpa to
ns8.zoneedit.com and ns13.zoneedit.com.  Try these:

dig ns 185.28.69.in-addr.arpa
dig any 1.185.28.69.in-addr.arpa @dns.lax.llns.net
dig any 0.185.28.69.in-addr.arpa @dns.lax.llns.net
dig any 255.185.28.69.in-addr.arpa @dns.lax.llns.net
dig any 256.185.28.69.in-addr.arpa @dns.lax.llns.net

Anything 0-255 returns the delegated name servers.  I only tried 256
outside that range, but it returns an SOA as authority rather than the
delegated name servers.

dig ptr 1.185.28.69.in-addr.arpa
	-> gw.house.tucs-beachin-obx-house.com.

This is not how you or I would do it.  But add a few more PTR records
and see how well it works.

-- 
Joe Yao
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