High-quality versions include built-in proxies that allow users to access the games through a different server, masking their actual activity.
Most educational institutions use web filters to block specific URLs or categories labeled as "gaming". When a DuckMath domain is "fixed," it typically means the developer or community has released a new mirror site or proxy that hasn't yet been flagged by school IT departments. Key Features of "Fixed" DuckMath Sites
If the main DuckMath portal is down, students often turn to other unblocked aggregators that use similar bypass methods: