Yes, you can. You need to make certain that the url is correct. Conduct that research on another laptop or smart phone. You can find the information about exchanges and some wallets on both coinmarketcap.com and coingecko.com You can look up all wallets on the Brave browser. For questions about masternodes go to masternodes.online to get the full list. Again, this research is NOT to be done on your crypto-laptop.