I think what @sankarkarthik said makes sense.
Or could it be that cloudFlare chennai uses lets say X n/w for outbound traffic ( to origin )
And sometimes it goes through Airtel backbone where its blocked and sometimes through other origin.
Or could it be that cloudFlare chennai uses lets say X n/w for outbound traffic ( to origin )
And sometimes it goes through Airtel backbone where its blocked and sometimes through other origin.