If you are on a personal laptop or phone, turn off the Wi-Fi and use your cellular hotspot. School filters can't block cellular data. It burns through your plan, but it is 100% secure.

However, two trends favor users:

A (often numbered like 66, 77, etc.) that reroutes SoundCloud traffic. These are not official, can be unsafe, and typically violate school/work policies.

SoundCloud cannot be directly used to bypass school or workplace network filters on its own, but it often remains accessible when other platforms are blocked The phrase "SoundCloud Unblocked 66"

This is the most cryptic part of the search. In the world of proxy sites, numbers often signify server clusters or specific versions of a proxy script.