Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #256347

Re: Question for this IP's PTR

Show all headers | View raw

On Sat, Mar 25, 2023 at 08:28:03AM +0800, fh@dnsbed.com wrote:
> Greetings,
> 
> as you see this PTR,
> 
> $ dig -x 1.1.1.1 +short
> one.one.one.one.
> 
> so 2.2.2.2 can have the PTR two.two.two.two? and 3.3.3.3 can have
> three.three.three.three?

Any IP address can have any PTR value.  You just have to petition the
owner of the IP address range to set it.

I didn't know .one was a valid TLD.  It looks like .two is not, so if
someone were to assign "two.two.two.two" as the PTR value of an IP
address, that PTR would not resolve back to any IP address.  (An IP
address block owner might reject such a petition.)

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Question for this IP's PTR fh@dnsbed.com - 2023-03-25 01:30 +0100
  Re: Question for this IP's PTR Greg Wooledge <greg@wooledge.org> - 2023-03-25 01:40 +0100
    Re: Question for this IP's PTR fh@dnsbed.com - 2023-03-25 02:30 +0100
    Re: Question for this IP's PTR Jeremy Ardley <jeremy@ardley.org> - 2023-03-25 02:30 +0100
    Re: Question for this IP's PTR Joe <joe@jretrading.com> - 2023-03-25 10:30 +0100
  Re: Question for this IP's PTR debian-user@howorth.org.uk - 2023-03-25 19:20 +0100

csiph-web