OT: checking subnet delegation?

Tue Jan 4 15:40:17 UTC 2011

On 1/4/11 4:32 PM, online-reg wrote:
> Hi All: I have a /28 that was supposed to be delegated to my NS by my ISP.
> 
> How can I check that it is correctly delegated? I have the in-addr.arpa
> zone
> configured in my NS and it resolves properly when I test it locally, but if
> I test using a remote service no reverse is found.
> 
> The subnet is 216.218.227.128/28
> 
> it should be delegated to ns.enigmedia.com and ns1.enigmedia.com

It is:

zarathustra:~ skull$ dig +trace -x 216.218.227.128

; <<>> DiG 9.6.0-APPLE-P2 <<>> +trace -x 216.218.227.128
;; global options: +cmd
.                       168344  IN      NS      a.root-servers.net.
.                       168344  IN      NS      g.root-servers.net.
.                       168344  IN      NS      f.root-servers.net.
.                       168344  IN      NS      l.root-servers.net.
.                       168344  IN      NS      b.root-servers.net.
.                       168344  IN      NS      j.root-servers.net.
.                       168344  IN      NS      e.root-servers.net.
.                       168344  IN      NS      d.root-servers.net.
.                       168344  IN      NS      k.root-servers.net.
.                       168344  IN      NS      c.root-servers.net.
.                       168344  IN      NS      m.root-servers.net.
.                       168344  IN      NS      i.root-servers.net.
.                       168344  IN      NS      h.root-servers.net.
;; Received 508 bytes from 2a02:9a8:1:100::ff16#53(2a02:9a8:1:100::ff16)
in 2 ms

216.in-addr.arpa.       86400   IN      NS      U.ARIN.NET.
216.in-addr.arpa.       86400   IN      NS      DILL.ARIN.NET.
216.in-addr.arpa.       86400   IN      NS      W.ARIN.NET.
216.in-addr.arpa.       86400   IN      NS      V.ARIN.NET.
216.in-addr.arpa.       86400   IN      NS      Y.ARIN.NET.
216.in-addr.arpa.       86400   IN      NS      T.ARIN.NET.
216.in-addr.arpa.       86400   IN      NS      X.ARIN.NET.
216.in-addr.arpa.       86400   IN      NS      Z.ARIN.NET.
;; Received 185 bytes from 192.33.4.12#53(c.root-servers.net) in 107 ms

227.218.216.in-addr.arpa. 86400 IN      NS      ns4.he.net.
227.218.216.in-addr.arpa. 86400 IN      NS      ns5.he.net.
227.218.216.in-addr.arpa. 86400 IN      NS      ns3.he.net.
227.218.216.in-addr.arpa. 86400 IN      NS      ns2.he.net.
227.218.216.in-addr.arpa. 86400 IN      NS      ns1.he.net.
;; Received 142 bytes from 192.42.93.32#53(Y.ARIN.NET) in 178 ms

128.227.218.216.in-addr.arpa. 86400 IN  CNAME
128.128-143.227.218.216.in-addr.arpa.
128-143.227.218.216.in-addr.arpa. 86400 IN NS   ns.enigmedia.com.
128-143.227.218.216.in-addr.arpa. 86400 IN NS   ns1.enigmedia.com.
;; Received 120 bytes from 2001:470:200::2#53(ns2.he.net) in 179 ms

> My zone file is 128-143.227.218.216.in-addr.arpa
> 
> Not sure if the problem is on my end or if it's not delegated properly?

zarathustra:~ skull$ fast-rdns.pl 216.218.227.128/28
# Stepping through 216.218.227.128/28 every 1 IPs
216.218.227.128  128.128-143.227.218.216.in-addr.arpa.
216.218.227.129  129.128-143.227.218.216.in-addr.arpa.
216.218.227.130  130.128-143.227.218.216.in-addr.arpa.
216.218.227.130  mail.searchpartner.pro.
216.218.227.131  131.128-143.227.218.216.in-addr.arpa.
216.218.227.131  ns1.enigmedia.com.
216.218.227.132  132.128-143.227.218.216.in-addr.arpa.
216.218.227.132  webmail.enigmedia.com.
216.218.227.133  133.128-143.227.218.216.in-addr.arpa.
216.218.227.133  133.searchpartner.pro.
216.218.227.134  134.128-143.227.218.216.in-addr.arpa.
216.218.227.134  www.badbeardscoffee.com.
216.218.227.135  135.128-143.227.218.216.in-addr.arpa.
216.218.227.135  www.sweetcitycandy.com.
216.218.227.136  136.128-143.227.218.216.in-addr.arpa.
216.218.227.136  www.metrocandy.com.
216.218.227.137  137.128-143.227.218.216.in-addr.arpa.
216.218.227.137  www.northsouthmusic.org.
216.218.227.138  138.128-143.227.218.216.in-addr.arpa.
216.218.227.138  www.searchpartner.pro.
216.218.227.139  139.128-143.227.218.216.in-addr.arpa.
216.218.227.139  139.searchpartner.pro.
216.218.227.140  140.128-143.227.218.216.in-addr.arpa.
216.218.227.140  www.myngrid.com.
216.218.227.141  141.128-143.227.218.216.in-addr.arpa.
216.218.227.141  www.dogtownbites.com.
216.218.227.142  142.128-143.227.218.216.in-addr.arpa.
216.218.227.142  142.searchpartner.pro.
216.218.227.143  143.128-143.227.218.216.in-addr.arpa.
# Took 3 seconds to scan 216.218.227.128/28 with stepsize 1

-- 
Paranoia is a disease unto itself. And may I add: the person standing
next to you may not be who they appear to be, so take precaution.
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