I guess that I have a lot to learn yet about routing. Maybe some of you
folks will yet again take pity on me and explain this to me.
>From where I am sitting it appears that AS12445 is announcing a route to
all of 213.0.0.0/8. (I only happened to find out about this because,
as it happens there are some spamming inside of 213.0.0.0/8.)
Anyway, this is my reference source:
https://bgp.he.net/AS12445#_prefixes
I did think that I should try to just email the official contacts AS12445
privately to inquire about this, and so I sent email to all three of
the contact email addresses listed in the RIPE WHOIS record for AS12445,
but as you can all see below, that didn't really work out very well.
Anyway, this doesn't seem to be such a great idea, security-wise, i.e. to
allow random network to announce routes to entire /8s (or larger) that
don't actually belong to them.
It is hard for me to tell how long this has been ongoing in the case of
this specific prefix and this specific ASN. If anyone else can illuminate
me regarding that, then I would appreciate it.
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From: "Ronald F. Guilmette" <rfg@tristatelogic.com>
To: gvinetti@selenebs.it, galasso@selenebs.it, abuse@selenebs.it
Subject: 213.0.0.0/8
Date: Sat, 06 Apr 2019 22:57:32 -0700
Message-ID: <32415.1554616652@segfault.tristatelogic.com>
Greetings,
I waas wondering if you people could explain to me why your ASN (AS12445)
announcing a route at all of 213.0.0.0/8.
I don't think that your network has been assigned that entire huge block
of IPv4 addresses or that all of that IPv4 space belongs to you.
Do you disagree?
https://bgp.he.net/AS12445#_prefixes
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