TradeOgre, the dominating exchange for Masari, is up again but so far only 1800 users are currently there online vs. more than 3000 before the DDOS attacks.
In case your browser won't load the page and immediately returns an error page, here is what you can do.
Use 1.1.1.1 as DNS server locally on your machine or even better in your modem/router. TradeOgre has recently changed IP, I think from 188.214.30.132 to 104.24.104.181 (that's at Cloudflare now).
If you can't access the site it means the DNS of your ISP has not synced yet with the master DNS nodes or how they are called.
In that case just use 1.1.1.1 as DNS or wait another day or so until your local DNS has been updated.

You can do a ping in your CMD and see to which IP tradeogre dot com resolves.