Similar to 1.0.0.0/8 case, which was allocated to APNIC last year or so... On Sun, Jan 15, 2012 at 6:47 AM, <bmanning@vacation.karoshi.com> wrote:

On Sun, Jan 15, 2012 at 06:36:12AM -0600, Robert Bonomi wrote:

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From nanog-bounces+bonomi=mail.r-bonomi.com@nanog.org  Sun Jan 15 02:02:00 2012 Subject: Re: Whois 172/12 From: "Patrick W. Gilmore" <patrick@ianai.net> Date: Sun, 15 Jan 2012 02:58:11 -0500 To: NANOG list <nanog@nanog.org>

Read RFC1918.

Likely a machine on his local network (i.e. behind the same NAT box) is hitting him.

Patrick,   I'v read RFC-1918.   I cannot find *any* reference to  172.0/12, as the OP was asking about.  172.16/12, yes. but not 172.0/12.  Can you please clarify your advice?

ZZ

       so as a stylistic point,   172/12  is supposed to equal 172.0.0.0/12?

       if memory serves, back in the day, there were records of allocations in this space,        pre-ARIN. When RFC 1918 was settled on, there were some folks blocking 172.0.0.0/8        so there was talk of relocating those folks into other space.

/bill