Proxy lists are Band-Aids. If you are serious about accessing SoundCloud unblocked reliably, you need a VPN. Specifically, you want a VPN with (sometimes labeled as "Port 66" or "Stealth" mode).
If "unblocked" refers to your personal interactions with other users: soundcloud unblocked 66 top
You don't need to gamble with "66 Top." Here are four reliable, safe methods to unblock SoundCloud that won't give your IT department a heart attack. Proxy lists are Band-Aids
The Gateway to Restricted Audio: An Analysis of SoundCloud and the "Unblocked 66" Phenomenon Introduction you need a VPN. Specifically