Funny cache records
Barry Margolin
barmar at alum.mit.edu
Sat Feb 21 02:58:05 UTC 2004
In article <c1654u$3090$1 at sf1.isc.org>,
Jeff Stevens <jstevens at vnet.ibm.com> wrote:
> On 2/20/2004 5:06 PM, Barry Margolin wrote:
> >
> > I'm not sure why the sbcglobal.net server is involved at all. Does he
> > have "forwarders" configured? Tell him to use the root servers directly
> > instead of forwarding to his ISP's servers.
> >
> I think his ISP is doing something funny, he forwards to 3 locations, 2
> being his ISP and I see this other crud in the cache, which makes me
> think his ISP is doing something funny...
Let me guess, his default domain is edgesuite.net, right?
I suspect his ISP is making use of some transparent web caching provided
by Akamai, and it involves using DNS to redirect traffic to their
servers.
>
>
> $ORIGIN msn.com.edgesuite.net.
> search 1067 IN CNAME a134.ms.akamai.net. ;Cr=answer [206.13.29.12]
> entimg 1567 IN CNAME a397.ms.akamai.net. ;Cr=answer [206.13.28.12]
> sc 2578 IN CNAME a1038.ms.akamai.net. ;Cr=answer [206.13.28.12]
> $ORIGIN search.msn.com.edgesuite.net.
> auto 1110 IN CNAME a134.ms.akamai.net. ;Cr=answer [206.13.29.12]
> $ORIGIN msnbc.msn.com.edgesuite.net.
> media 3496 IN CNAME a365.ms.akamai.net. ;Cr=answer [206.13.29.12]
> $ORIGIN aol.com.edgesuite.net.
> cdn 2056 IN CNAME a1009.aol.akamai.net. ;Cr=answer [206.13.28.12]
> $ORIGIN careerbuilder.com.edgesuite.net.
> media 44568 IN CNAME a552.g.akamai.net. ;Cr=answer [206.13.29.12]
> $ORIGIN ru4.com.edgesuite.net.
> content 2210 IN CNAME a2047.na.akamai.net. ;Cr=answer [206.13.28.12]
> $ORIGIN unicast.com.edgesuite.net.
> cache 9548 IN CNAME a853.xc.akamai.net. ;Cr=answer [206.13.28.12]
> $ORIGIN thepassionofthechrist.com.edgesuite.net.
> www 2346 IN CNAME a581.g.akamai.net. ;Cr=answer [206.13.29.12]
> $ORIGIN reuters.com.edgesuite.net.
> wwwi 259 IN CNAME a1010.g.akamai.net. ;Cr=answer [206.13.28.12]
--
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
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