[148417] in North American Network Operators' Group
Re: Whois 172/12
daemon@ATHENA.MIT.EDU (Jeroen Massar)
Sun Jan 15 03:44:56 2012
In-Reply-To: <3726cbbfb38c55f08812d244272f261d.squirrel@secure.xecu.net>
From: Jeroen Massar <jeroen@unfix.org>
Date: Sun, 15 Jan 2012 09:43:46 +0100
To: "ted@fred.net" <ted@fred.net>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 15 Jan 2012, at 09:20, "Ted Fischer" <ted@fred.net> wrote:
> My question is about 172/12. Where is it, what is it's supposed purpose.=20=
See IANA which tells you at=20
http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xml
That ARIN is handling it. As their whois does not have anything for it, and B=
GP does not have it it obviously is unused as of yet and somebody is just sp=
oofing. Solution: implement BCP38 in your network.
Note that IANA has run out of v4, the RIRs themselves have quite a bit left,=
obviously, ARIN still has big chunks of 172/8.
> I'm almost sure it's an internal box.
Then apply BCP38 and figure out where it lives.
> I just find it better to give a
> professional answer to "why can't I use this" than just "you can't use
> this and why is this address scanning you for udp/137 anyway"
It is not their address space, as such they are not supposed to use it. What=
is so difficult about that answer?!
Greets,
Jeroen
