Reverse look-up returns root servers?

Matus UHLAR - fantomas uhlar at fantomas.sk
Mon Oct 28 20:47:42 UTC 2013


On 28.10.13 16:07, Shawn Bakhtiar wrote:
>When I look-up the reverse at my recursive server I get:
>prompt> dig -x 198.173.12.21

>;; AUTHORITY SECTION:
>12.173.198.in-addr.arpa. 40828    IN    NS    auth2.dns.cogentco.com.
>12.173.198.in-addr.arpa. 40828    IN    NS    auth5.dns.cogentco.com.
>12.173.198.in-addr.arpa. 40828    IN    NS    auth4.dns.cogentco.com.
>12.173.198.in-addr.arpa. 40828    IN    NS    auth1.dns.cogentco.com.
>
>;; ADDITIONAL SECTION:
>auth1.dns.cogentco.com.    16531    IN    AAAA    2001:550:1:a::d
>auth2.dns.cogentco.com.    30846    IN    AAAA    2001:550:1:b::d
>auth4.dns.cogentco.com.    30846    IN    AAAA    2001:978:1:a::d
>auth5.dns.cogentco.com.    30846    IN    AAAA    2001:978:1:b::d

auth1.dns.cogentco.com. 10800   IN      A       66.28.0.14
auth1.dns.cogentco.com. 43200   IN      AAAA    2001:550:1:a::d
auth2.dns.cogentco.com. 10800   IN      A       66.28.0.30
auth2.dns.cogentco.com. 43200   IN      AAAA    2001:550:1:b::d
auth4.dns.cogentco.com. 10800   IN      A       80.245.32.74
auth4.dns.cogentco.com. 43200   IN      AAAA    2001:978:1:a::d
auth5.dns.cogentco.com. 10800   IN      A       80.91.64.50
auth5.dns.cogentco.com. 43200   IN      AAAA    2001:978:1:b::d

fix the TTLs, they should be the same. 

BTW, yout parent referral only contains two servers, you should ask for
adding the others:

12.173.198.in-addr.arpa. 14400  IN      NS      auth2.dns.cogentco.com.
12.173.198.in-addr.arpa. 14400  IN      NS      auth1.dns.cogentco.com.


-- 
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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