Crash border.

The Crash border is a boundary that begins at coordinates 32 million, where server problems begin. Incidentally, the server has occasionally crashed at these coordinates.

When the crash border was reached by player CheesyDean on June 14, 2021, the server administration implemented a huge number of bug fixes, making this boundary virtually safe for the server now, and no crashes occur.

Information from the official 2Beta2T website:

32m Overworld (the 'crash boarder') is reached by 'CheesyDean' spawning a wave of crash fixes.