Re: Accidental ARIN Reallocation

[Christopher Morrow via NANOG <nanog () lists nanog org>]

On Wed, Dec 17, 2025 at 12:06 AM William Herrin via NANOG
<nanog () lists nanog org> wrote:
> On Tue, Dec 16, 2025 at 7:32 PM Tim Burke via NANOG
> <nanog () lists nanog org> wrote:
> > It seems like there are lots of folks that use it for direct downstream customer-facing allocations and are not 
> > even utilizing them for dual-stack
> > services as intended. I have seen a number of “low end” web hosting companies (folks that advertise on websites 
> > like Low End Box) that do
> > just that, as well as some smaller start up ISPs (including one right in my backyard that doesn’t even bother 
> > announcing IPv6).

I don't think, really, there was ever any REAL hope that 100.64 was
going to be used for anything except 'more rfc1918'.
I'm sure in our heart of hearts we HOPED this would be a bridge
element to get to more v6 and less v4, and that MIGHT
even be the case sometimes, but.... it's non-globally-unique and
people will do with that as they may.

> Hi Tim,
>
> If you know it's 4.10 space (not address space allocated under a
> different policy section) and you know they're using it for plain IPv4
> or generic dual stack, please file a report at
> https://account.arin.net/public/fraud

Is it abuse/fraud if the LIR is treating this as RFC1918 / private space?

> ARIN takes fraud seriously but they don't have eyes everywhere.

yes.
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