Re: Spamhaus vs. Cloudflare

[ITechGeek via NANOG <nanog () lists nanog org>]

Might also be worth mentioning to your customer that while you can
potentially unblock the subnets for your network, they will still be
blocked on other networks if they have users elsewhere.

On Thu, Sep 17, 2026, 18:53 Jon Lewis via NANOG - nanog at lists.nanog.org <
nanog () lists nanog org> wrote:

> On Thu, 17 Sep 2026, Seth Mattinen via NANOG wrote:
>
> > >  Ah, so you and Cloudflare have a mutual customer being impacted by
> their
> > >  use of a Cloudflare IP in one of those ranges?  Have you suggested that
> > >  they complain to Cloudflare and suggest to Cloudflare that they "clean
> up
> > >  their network" and reputation?
> >
> > They already tried to work with Cloudflare and were told that "the
> resolution
> > is for all of their IPs to be specifically allowed."
>
> That's certainly an option.  However you're consuming DROP, you should be
> able to whitelist IPs or reject some of the DROP data.
>
> If that's really Cloudflare's position (from the top...not just what some
> low level support person suggested), then that's indicative of their
> problem.  i.e. That they seem to operate under the belief that there's no
> form of Internet abuse too offensive for them to host.  It seems to me,
> that's exactly what DROP is for and the solution is for more networks to
> use DROP.
>
> ----------------------------------------------------------------------
>   Jon Lewis, MCP :)              |  I route
>   Blue Stream Fiber, Sr. Neteng  |  therefore you are
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