Does that IP allow you conclude anything beyond the page being on an US server? The data could be compiled in some data-center @ an African location. However with countries in Africa's all facing issues (electricity & energy supply to the region is less than ideal due to economic turbulence in world and local markets) it would be in google's near-term interests to keep any critical operations in countries with more stability of energy service.
I am asking this question, due to do 1 SEO work in a Kenyan based site. So if you have any advices related with that, please tell it here. It will be very helpful.