nanog mailing list archives

Prefix hijack by AS4761 (was Re: BGPMON Alert Questions)


From: Stephen Fulton <sf () lists esoteric ca>
Date: Wed, 02 Apr 2014 15:10:41 -0400

I'm seeing the same hijack of prefixes by multiple networks under my watch, at 18:40 UTC and 19:06 UTC.

-- Stephen


On 2014-04-02 2:51 PM, Joseph Jenkins wrote:
So I setup BGPMON for my prefixes and got an alert about someone in
Thailand announcing my prefix.  Everything looks fine to me and I've
checked a bunch of different Looking Glasses and everything announcing
correctly.

I am assuming I should be contacting the provider about their
misconfiguration and announcing my prefixes and get them to fix it.  Any
other recommendations?

Is there a way I can verify what they are announcing just to make sure they
are still doing it?

Here is the alert for reference:

Your prefix:          8.37.93.0/24:

Update time:          2014-04-02 18:26 (UTC)

Detected by #peers:   2

Detected prefix:      8.37.93.0/24

Announced by:         AS4761 (INDOSAT-INP-AP INDOSAT Internet Network
Provider,ID)

Upstream AS:          AS4651 (THAI-GATEWAY The Communications Authority of
Thailand(CAT),TH)

ASpath:               18356 9931 4651 4761



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