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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=325480014-29022008>for those interested in the matter</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=325480014-29022008></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=325480014-29022008>tom</SPAN></FONT></DIV>
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class=325480014-29022008></SPAN></FONT> </DIV>
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class=325480014-29022008></SPAN></FONT> </DIV><BR>
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<DIV style="MARGIN: 0px">Dear Colleagues,</DIV>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>
<DIV style="MARGIN: 0px">As you may be aware from recent news reports, traffic
to the youtube.com website was 'hijacked' on a global scale on Sunday, 24
February 2008. The incident was a result of the unauthorised announcement of
the prefix 208.65.153.0/24 and caused the popular video sharing website to
become unreachable from most, if not all, of the Internet.</DIV>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>
<DIV style="MARGIN: 0px">The RIPE NCC conducted an analysis into how this
incident was seen and tracked by the RIPE NCC's Routing Information Service
(RIS) and has published a case study at:</DIV>
<DIV style="MARGIN: 0px">
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3><A
href="http://www.ripe.net/news/study-youtube-hijacking.html">http://www.ripe.net/news/study-youtube-hijacking.html</A></FONT></DIV></DIV>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>
<DIV style="MARGIN: 0px">The RIPE NCC RIS is a service that collects Border
Gateway Protocol (BGP) routing information from roughly 600 peers at 16
Internet Exchange Points (IXPs) across the world. Data is stored in near
real-time and can be instantly queried by anyone to provide multiple views of
routing activity for any point in time.</DIV>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>
<DIV style="MARGIN: 0px">The RIS forms part of the RIPE NCC's suite of
Information Services, which together provide a deeper insight into the
workings of the Internet. The RIPE NCC is a neutral and impartial
organisation, and commercial interests therefore do not influence the data
collected.</DIV>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>
<DIV style="MARGIN: 0px">The RIPE NCC Information Services suite also includes
the Test Traffic Measurement (TTM) service, the DNS Monitoring (DNSMON)
service and Hostcount. All of these services are available to anyone, and most
of them are offered free of charge.</DIV>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>
<DIV style="MARGIN: 0px">More information about RIPE NCC Information Services
can be found at:</DIV>
<DIV style="MARGIN: 0px"><A
href="http://is-portal.ripe.net">http://is-portal.ripe.net</A></DIV>
<DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>
<DIV style="MARGIN: 0px">Regards,</DIV>
<DIV style="MARGIN: 0px">Daniel Karrenberg</DIV>
<DIV style="MARGIN: 0px">Chief Scientist, RIPE NCC</DIV>
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