Blackhole route advertisements by AS14037 of our IP space - please filter them out at your end

Suresh Ramasubramanian ops.lists at
Thu Nov 20 05:20:30 UTC 2008

And the guy who is doing this is also an XO downstream as I see.. and
I have a feeling he wont like the consequences of what he did .. but
meanwhile, operationally speaking, my 40 million ++ users would be
glad if these fake announcements could get cut off at the knees

Head, Antispam Operations
Outblaze Limited

On Thu, Nov 20, 2008 at 10:49 AM, Suresh Ramasubramanian
<ops.lists at> wrote:
> Hi
> Yes we are on the phone with xo - but meanwhile several other
> operators have been picking it up.
> As for operational impact - we're - thats,
> hosted domains etc, email for 40 million users or so.
> That makes us, lemme see, quite a bit larger than people like Comcast,
> in terms of userbase for email.
> I hope that helps the community decide whether or not to accept these
> bogus blackhole prefixes
> thanks
> srs
> On Thu, Nov 20, 2008 at 10:41 AM, kris foster <kris.foster at> wrote:
>> On Nov 19, 2008, at 8:43 PM, Suresh Ramasubramanian wrote:
>>> If you see being announced from any other prefix than
>>> XO (2828 I guess) please ignore it.  Especially if you see it
>>> announced from 19318 or 14037.
>> You're unlikely to get any reasonable response or action here. The best
>> course of action is to work through XO. You are their customer, and it is
>> their address space, right?
>> For what it's worth was advertised recently but as a
>> community we have no way of knowing the validity of it, or the operational
>> impact.
>> Kris
>> (not speaking as MLC)
> --
> Suresh Ramasubramanian (ops.lists at

Suresh Ramasubramanian (ops.lists at

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