writes "On the directions of the government of India, Indian ISPs have started censoring and blocking web properties. This was first noticed by Indian bloggers and upon inquiring with their respective ISPs, the actions are confirmed. Unfortunately, Blogspot and TypePad are the targets till now."
There's an ongoing discussion of the censorship
on GoogleGroups. The rediff.com coverage linked above indicates that the blocking is based on a list issued by India's Department of Telecommunications.