From a cable modem in Seattle behind broadwing, it is going to this, behind SBC in southern California:

16 62 ms 61ms 50 ms Savvis-CDN-IAF1075825.cust-rtr.pacbell.net [69.108.147.58]

Makes you wonder if they'll be switching back to Akamai soon. :)

From Southern California off Level3, I get the akamai'd version:

[jeff@www jeff]$ traceroute download.microsoft.com traceroute to dom.dl.ms.akadns.net (207.46.253.62), 30 hops max, 38 byte packets 1 vps041118.2advanced.net (216.174.103.241) 0.081 ms 0.091 ms 0.054 ms 2 reverse.techspace.com (216.174.111.210) 0.682 ms 0.435 ms 0.444 ms 3 reverse.techspace.com (216.174.116.19) 0.816 ms 0.839 ms 0.664 ms 4 ge-6-1-108.hsa1.Tustin1.Level3.net (65.58.240.5) 1.646 ms 1.253 ms 1.061 ms 5 4.68.114.1 (4.68.114.1) 1.334 ms 1.690 ms 1.825 ms 6 as-0-0.mp1.Seattle1.Level3.net (209.247.10.137) 31.052 ms so-3-0-0.mp2.Seattle1.Level3.net (209.247.9.122) 30.559 ms 30.541 ms 7 ge-10-1.hsa1.Seattle1.Level3.net (4.68.105.70) 30.957 ms ge-11-1.hsa1.Seattle1.Level3.net (4.68.105.102) 30.896 ms ge-10-0.hsa1.Seattle1.Level3.net (4.68.105.6) 30.753 ms 8 unknown.Level3.net (63.211.220.82) 36.724 ms 34.164 ms 31.604 ms 9 ten8-3.wst-76cb-1a.ntwk.msn.net (207.46.35.105) 30.788 ms 30.521 ms 30.724 ms 10 pos1-0.iusnixcpxc1201.ntwk.msn.net (207.46.36.210) 30.931 ms 30.782 ms 30.626 ms 11 pos1-0.tke-12ix-2a.ntwk.msn.net (207.46.155.10) 32.050 ms 31.518 ms 31.479 ms 12 po10.tuk-65ns-mcs-1a.ntwk.msn.net (207.46.224.151) 31.212 ms 30.886 ms 31.020 ms [jeff@www jeff]$ dig +trace download.microsoft.com soa ; <<>> DiG 9.2.2-P3 <<>> +trace download.microsoft.com soa [snip ....] microsoft.com. 172800 IN NS ns1.msft.net. microsoft.com. 172800 IN NS ns2.msft.net. microsoft.com. 172800 IN NS ns3.msft.net. microsoft.com. 172800 IN NS ns4.msft.net. microsoft.com. 172800 IN NS ns5.msft.net. ;; Received 218 bytes from 192.5.6.30#53(A.GTLD-SERVERS.NET) in 72 ms download.microsoft.com. 3600 IN CNAME main.dl.ms.akadns.net. ;; Received 75 bytes from 207.46.245.230#53(ns1.msft.net) in 31 ms - J -- Jeff Jirsa jjirsa@2advanced.net Senior Network Engineer 2advanced.net: Precision Hosting Platform