Reverse DNS[Solved]

dunz0r · 2010-09-10 14:02:45

Hi!

I have a server with a fixed IP adress in colo. It's through my job so I have full control of the dns-servers as well.

I recently bought a domain, so I could have a cool hostname on irc. But for some reason it won't work

At my domain provider I have these DNS records:

subdomain IN A 1.2.3.4

and on the DNS server responsible for the adress I have:

4.3.2.1.in-addr.arpa. IN PTR subdomain.domain.com

Am I missing something?

Last edited by dunz0r (2010-09-11 08:00:48)

yejun · 2010-09-10 15:00:42

Try dig -x +trace ip.

dunz0r · 2010-09-10 15:02:00

Ok, here's the answer I got:

dig -x +trace 62.109.46.152
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> -x +trace 62.109.46.152
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 60097
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;+trace.in-addr.arpa.           IN      PTR

;; AUTHORITY SECTION:
in-addr.arpa.           10800   IN      SOA     A.ROOT-SERVERS.NET. dns-ops.ARIN.NET. 2010091004 1800 900 691200 10800

;; Query time: 283 msec
;; SERVER: 212.112.166.18#53(212.112.166.18)
;; WHEN: Fri Aug  8 01:08:57 2003
;; MSG SIZE  rcvd: 104

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 46683
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;62.109.46.152.                 IN      A

;; AUTHORITY SECTION:
.                       10800   IN      SOA     a.root-servers.net. nstld.verisign-grs.com. 2010091000 1800 900 604800 86400

;; Query time: 9 msec
;; SERVER: 212.112.166.18#53(212.112.166.18)
;; WHEN: Fri Aug  8 01:08:58 2003
;; MSG SIZE  rcvd: 106

dunz0r · 2010-09-10 15:03:45

I'll include the output from nslookup at my adress as well:

nslookup 62.109.46.152
Server:         212.112.166.18
Address:        212.112.166.18#53

Non-authoritative answer:
152.46.109.62.in-addr.arpa      name = is.a.hax0r.se.

Authoritative answers can be found from:
46.109.62.in-addr.arpa  nameserver = b.ns.ip-only.net.
46.109.62.in-addr.arpa  nameserver = a.ns.ip-only.net.
46.109.62.in-addr.arpa  nameserver = c.ns.ip-only.net.
a.ns.ip-only.net        internet address = 212.112.160.42
b.ns.ip-only.net        internet address = 212.112.163.90
c.ns.ip-only.net        internet address = 212.112.165.178

yejun · 2010-09-10 15:08:29

Sorry the correct syntax is dig +trace -x ip.

Here is tesult from my home http://ix.io/19P

is.a.hax0r.se

Last edited by yejun (2010-09-10 15:10:57)

dunz0r · 2010-09-10 15:13:55

Well... that's really odd. It seems to work. Yet; no cool hostname in irc

It just shows my IP-adress as hostname:

/who dunz0r
dunz0r@62.109.46.152

Last edited by dunz0r (2010-09-10 15:14:56)

yejun · 2010-09-10 15:16:26

RDNS is cached just like normal DNS. Wait for tomorrow.

dunz0r · 2010-09-10 15:17:09

Guess I'll have to

yejun · 2010-09-10 15:27:49

You forward dns should match reverse dns. Some server may reject if not.
My dig show no result for hax0r.se yet.

Last edited by yejun (2010-09-10 15:30:19)

T-Dawg · 2010-09-11 03:56:58

Same here, reverse lookup ok but no forward. Double check your A records.

dunz0r · 2010-09-11 08:00:16

I gave up on my DNS provider and decided to set it up on my companys dns-server instead. Now it works

Arch Linux

#1 2010-09-10 14:02:45

Reverse DNS[Solved]

#2 2010-09-10 15:00:42

Re: Reverse DNS[Solved]

#3 2010-09-10 15:02:00

Re: Reverse DNS[Solved]

#4 2010-09-10 15:03:45

Re: Reverse DNS[Solved]

#5 2010-09-10 15:08:29

Re: Reverse DNS[Solved]

#6 2010-09-10 15:13:55

Re: Reverse DNS[Solved]

#7 2010-09-10 15:16:26

Re: Reverse DNS[Solved]

#8 2010-09-10 15:17:09

Re: Reverse DNS[Solved]

#9 2010-09-10 15:27:49

Re: Reverse DNS[Solved]

#10 2010-09-11 03:56:58

Re: Reverse DNS[Solved]

#11 2010-09-11 08:00:16

Re: Reverse DNS[Solved]

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