I am not very sure but some acquaintance of mine was telling that such data is flashed in action watch of prostocks terminal . Do confirm with their staff first about this feature.
You can get that data on NSE of 1 day before. In real time I have seen chartlink providing the data by premium. You can ask the premium members. They can provide you exact information. Also check this out I dont know whether it would be useful for you or not but you can try https://trendlyne.com/portfolio/bulk-block-deals/