What are these strange domain names you get when you access dsl services??

euser1984 · 17-01-2015 11:55AM #1

I hope you know what I mean - I can't remember where to get them again but I've seen them with a range of providers - eircom, ntl etc.

Thanks.

ED E · 17-01-2015 07:46PM

Gonna guess you mean the reverse lookup names?

You'd have seen them in traces most likely:

  1    <1 ms    <1 ms    <1 ms  READYSHARE [192.168.2.1]
  2    11 ms    16 ms     8 ms  NOTTELLINGYOU.ntlworld.ie
  3    11 ms     9 ms     7 ms  NOTTELLINGYOU.ntlworld.ie
  4    21 ms    61 ms     9 ms  109.255.XXXXX
  5     8 ms    32 ms     7 ms  84.116.238.70
  6     9 ms     9 ms    10 ms  inex1.deg.ie.viatel.net [193.242.111.20]
  7     *        *        *     Request timed out.
  8     *        *        *     Request timed out.
  9     8 ms     9 ms     9 ms  gi-5-2.dub-bdtn-ar4.net.digiweb.ie [89.234.82.202]
 10     9 ms     7 ms     7 ms  boards.ie [89.234.66.107]

They're just the name that the block reserve resolves to. INEX in the above say is where most Irish ISPs peer (one of the places anyways).

Mr. G · 17-01-2015 09:48PM

Reverse DNS can be changed to something else if you ask (provided you're on a static ip).

euser1984 · 18-01-2015 12:00PM

When you say reverse dns are you referring to tracert here?

Just to add in another maybe non-relevant question here - when I run tracert and I get wildcards on a node does that simply mean that icmp is not enabled? Thanks.

What are these strange domain names you get when you access dsl services??

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