Any way to ping test a website covering most ISPs of India?

Problem: I am facing some issues with one website. Its not opening on certain ISPs from India.

Thought: While I try to fix this issue, its also important for me to know if the fixes/work-arounds are working for all ISPs. In this regard, could anyone tell me of a service/or a web portal where I can ping test a website and get more granular detail like ISPs which are popular in India? I have already seen some service online which offers city level information of the pings.

Ask: Any way to ping test a website covering most ISPs of India? Jio, Airtel, Vodafone, Tata, Idea.