Everything you need to know about SEO, delivered every Thursday.
Google Caffeine Now Live On One Google Data Center
As I reported at the Search Engine Roundtable, Matt Cutts of Google confirmed that the IP 18.104.22.168 is hitting the data center that is running the Caffeine index about 50% of the time. Matt Cutts explained that the update webmasters were noticing were either this data center or individual sites being penalized in some way.
Again, Caffeine is live on a single data center which is currently accessible about 50% of the time on 22.214.171.124. Matt may or may not give us a single IP which returns Caffeine results a 100% of the time, time will tell on that.