It seems the entire FIR above Afghanistan and Pakistan is closed. https://twitter.com/flightradar24/status/1100671221686042624?s=19
After initial chaos:
https://twitter.com/flightradar24/status/1100646637159018498?s=19
Things have settled down, but all of the traffic usually going over there to South China and south east Asia is now squeezed south of Mumbai
https://twitter.com/flightradar24/status/1100829344124026881?s=19