Tracking down reverse for ip

Thu Apr 15 20:59:19 UTC 2010

On Thu, 2010-04-15 at 15:07 -0500, Dennis Burgess wrote:
> I have a customer that has an IP of 12.43.95.126. Currently, I can not
> get any reverse on this IP.  
> 
>  
> 
> What is the best way to find out the responciable servers for this?
> Thanx in advance.
> 

nenolod at petrie:~$ dig -x 12.43.95.126 +trace @4.2.2.1
; <<>> DiG 9.6.1-P2 <<>> -x 12.43.95.126 +trace @4.2.2.1
;; global options: +cmd
.			26412	IN	NS	j.root-servers.net.
.			26412	IN	NS	a.root-servers.net.
.			26412	IN	NS	l.root-servers.net.
.			26412	IN	NS	e.root-servers.net.
.			26412	IN	NS	g.root-servers.net.
.			26412	IN	NS	k.root-servers.net.
.			26412	IN	NS	d.root-servers.net.
.			26412	IN	NS	h.root-servers.net.
.			26412	IN	NS	i.root-servers.net.
.			26412	IN	NS	c.root-servers.net.
.			26412	IN	NS	m.root-servers.net.
.			26412	IN	NS	f.root-servers.net.
.			26412	IN	NS	b.root-servers.net.
;; Received 228 bytes from 4.2.2.1#53(4.2.2.1) in 34 ms

arpa.			172800	IN	NS	A.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	H.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	C.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	L.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	F.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	M.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	G.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	E.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	D.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	I.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	B.ROOT-SERVERS.NET.
arpa.			172800	IN	NS	K.ROOT-SERVERS.NET.
;; Received 495 bytes from 192.58.128.30#53(j.root-servers.net) in 28 ms

12.in-addr.arpa.	86400	IN	NS	DMTU.MT.NS.ELS-GMS.ATT.NET.
12.in-addr.arpa.	86400	IN	NS	CMTU.MT.NS.ELS-GMS.ATT.NET.
12.in-addr.arpa.	86400	IN	NS	CBRU.BR.NS.ELS-GMS.ATT.NET.
12.in-addr.arpa.	86400	IN	NS	DBRU.BR.NS.ELS-GMS.ATT.NET.
;; Received 143 bytes from 192.36.148.17#53(I.ROOT-SERVERS.NET) in 153
ms

126.95.43.12.in-addr.arpa. 172800 IN	CNAME
126.112-28.95.43.12.in-addr.arpa.
112-28.95.43.12.in-addr.arpa. 172800 IN	NS	ns2.nightowl.net.
112-28.95.43.12.in-addr.arpa. 172800 IN	NS	mail.nightowl.net.
;; Received 117 bytes from 12.127.16.69#53(CMTU.MT.NS.ELS-GMS.ATT.NET)
in 60 ms

ns2.nightowl.net/mail.nightowl.net is broken (missing
128-28.95.43.12.in-addr.arpa) zone.

For someone who is a CCNA, Mikrotik Certified Whatever, etc, etc, etc,
you really should know how to use dig(1).

William