microsoft
Christopher A. Woodfield
rekoil at semihuman.com
Sat Dec 29 16:19:56 UTC 2001
What you're seeing is MS using Akamai's Edgesuite service. Basically,
www.microsoft.com CNAMES to www.microsoft.akadns.net, which resolves to
the "closest" Akamai server to the source IP on the DNS query. That box
caches the content from the *real* www.microsoft.com, and serves it up.
Nice concept, and a helluva lot easier to implement on the end user side
than FreeFlow, IMHO...
-Chris
On Fri, Dec 28, 2001 at 01:40:48PM -0500, Ian A Finlay wrote:
>
> On Fri, 28 Dec 2001, Christopher Schulte wrote:
> > Looks to me as if Microsoft is altering global delegation of their
> > windowsupdate service. Maybe diversifying the dns structure as they did
> > with microsoft.com after the attacks a while back? They now have 12 DNS
> > servers scattered around the globe, just to serve microsoft.com dns.
>
> Yeah, maybe they're moving they're update service from windowsupdate.microsoft.com to
> windowsupdate.com. Maybe they'll "Akamize" windowsupdate.com too...
>
> bash-2.04$ host www.microsoft.com
> www.microsoft.com is a nickname for www.microsoft.akadns.net
> www.microsoft.akadns.net has address 207.46.230.218
> www.microsoft.akadns.net has address 207.46.230.219
> www.microsoft.akadns.net has address 207.46.230.220
> www.microsoft.akadns.net has address 207.46.197.100
> www.microsoft.akadns.net has address 207.46.197.101
> www.microsoft.akadns.net has address 207.46.197.113
> www.microsoft.akadns.net has address 207.46.197.102
>
> bash-2.04$ host windowsupdate.microsoft.com
> windowsupdate.microsoft.com has address 207.46.106.88
>
> bash-2.04$ host windowsupdate.com
> windowsupdate.com has address 207.46.106.88
> windowsupdate.com has address 207.46.226.17
> windowsupdate.com has address 207.68.131.27
>
> -Ian
>
>
--
---------------------------
Christopher A. Woodfield rekoil at semihuman.com
PGP Public Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xB887618B
More information about the NANOG
mailing list