From Boing-boing a map of the world's top level domain names. Unsurprisingly, China (.cn) and India (.in) leads the pack.
Top African ones according to this map:
Democratic Republic of Congo (.cd)
South Africa (.za)
Both DRC and Etiophia looks suspicious. According to Internet World Stats, DRC has only 180 000 Internet users, Ethiopia 164 000 compared to 6 million in Egypt, 8 million in Nigeria and 5.1 million in South Africa.