community real-time BGP hijack notification service

Avi Freedman freedman at
Fri Sep 12 15:03:03 CDT 2008

Hmm, I'm trying to figure out the application here.

You have single prefixes originated or originate-able by more than
5 or 6 ASs?

I see - is it that you have, say a /16 with 13 potential ASs that might
be seen as originating more specifics inside that /16?

Hadn't considered that; we were envisioning that those specifics would 
be set up as separate alerts.

It's easy enough to extend the # of ASNs that can be listed, however.
That'll be done this weekend.



> Looks interesting, but it only takes a fairly short list of ASNs for a
> prefix. For our big CIDR blocks, we have WAY too many ASNs to enter them
> all, so it's pretty useless for me. I need to be able to enter at very
> least a dozen ASes and I suspect may folks have a LOT more then that.
> For now, I'll enter some shorter pieces from the block, but I'm most
> concerned with the pieces that are not currently assigned, so are
> available for hijack. I have added the larger, unassigned blocks. I'll
> start adding assigned bits and pieces as well as unassigned pieces, but
> being able to put all valid origin ASes in the list for the full blocks
> would be a lot nicer.

> R. Kevin Oberman, Network Engineer

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