Potential Prefix Hijack

Mark Tinka mtinka at globaltransit.net
Tue Nov 11 02:54:01 UTC 2008

Hi all.

Anyone know how we can contact AS16735 and their upstream 
AS27664. We think they are hijacking a number of our 
prefixes (AS24218- and AS17992-originated). Thanks BGPmon:


Possible Prefix Hijack (Code: 11)
1 number of peer(s) detected this updates for your prefix 
Update details: 2008-11-11 02:24 (UTC) 
Announced by: AS16735 (Companhia de Telecomunicacoes do 
Brasil Central)
Transit AS: 27664 (CTBC Multimídia)
ASpath: 27664 16735

RIPE's RIS BGPlay confirms the same, for about the last 

E-mails to them won't get there (of course), so our NOC are 
contacting them via Gmail/Yahoo.

All help appreciated.


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