nanog mailing list archives
Re: Whois 172/12
From: Jeroen Massar <jeroen () unfix org>
Date: Sun, 15 Jan 2012 09:43:46 +0100
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.
See IANA which tells you at 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 BGP does not have it it obviously is unused as of yet and somebody is just spoofing. 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
Current thread:
- Whois 172/12 Ted Fischer (Jan 14)
- Re: Whois 172/12 Alex Ryu (Jan 14)
- Re: Whois 172/12 Patrick W. Gilmore (Jan 14)
- Re: Whois 172/12 Ted Fischer (Jan 15)
- Re: Whois 172/12 Jeroen Massar (Jan 15)
- Re: Whois 172/12 Jimmy Hess (Jan 15)
- RE: Whois 172/12 Keith Medcalf (Jan 15)
- Re: Whois 172/12 Justin M. Streiner (Jan 15)
- Re: Whois 172/12 Suresh Ramasubramanian (Jan 15)
- RE: Whois 172/12 Network IP Dog (Jan 15)
- Re: Whois 172/12 Suresh Ramasubramanian (Jan 15)
- Re: Whois 172/12 Patrick W. Gilmore (Jan 14)
- Re: Whois 172/12 Tom Hill (Jan 19)
- Re: Whois 172/12 Alex Ryu (Jan 14)
- Re: Whois 172/12 Robert Bonomi (Jan 15)
- Re: Whois 172/12 bmanning (Jan 15)
- Re: Whois 172/12 Jon Lewis (Jan 15)