nanog mailing list archives
Re: Suspecious anycast prefixes
From: Joe Abley <jabley () hopcount ca>
Date: Mon, 2 May 2011 22:35:20 +0300
On 2011-05-02, at 21:16, Yaoqing(Joey) Liu wrote:
I found the following prefixes are often originated by many ASNs more than five, wonder if they provide global anycast service, if so what specific service they provide? 12.64.255.0/24
CERNET.
70.37.135.0/24
Microsoft/Hotmail.
198.32.176.0/24
Yahoo!
199.7.49.0/24
VeriSign.
199.7.80.0/24
VeriSign.
199.16.93.0/24
VeriSign.
199.16.94.0/24
VeriSign.
199.16.95.0/24
VeriSign.
206.223.115.0/24
Yahoo! These to me are all organisations that might reasonably be distributing services using anycast. It's difficult to tell whether all the origin ASes you see for those prefixes are legitimate, of course. It's perhaps worth noting that there is work in the IETF to recommend that every prefix originated as part of an anycast cloud uses a unique origin AS (see <http://tools.ietf.org/html/draft-ietf-grow-unique-origin-as-00>). I'm not personally convinced of the arguments in the draft, but mentioning it in this thread seems reasonable. Joe
Current thread:
- Suspecious anycast prefixes Yaoqing(Joey) Liu (May 02)
- RE: Suspecious anycast prefixes Stefan Fouant (May 02)
- Re: Suspecious anycast prefixes Joe Abley (May 02)
- Re: Suspecious anycast prefixes Christopher Morrow (May 02)
- Re: Suspecious anycast prefixes bmanning (May 02)
- Re: Suspecious anycast prefixes Andrew Koch (May 02)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 04)
- Re: Suspecious anycast prefixes Joe Abley (May 04)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 04)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 04)
- Re: Suspecious anycast prefixes Bill Woodcock (May 05)
- Re: Suspecious anycast prefixes Bill Woodcock (May 05)
- Re: Suspecious anycast prefixes Yaoqing(Joey) Liu (May 05)
- Re: Suspecious anycast prefixes Christopher Morrow (May 02)