I've read that bitcoin addresses are never destroyed, but do they get recycled/reassigned? What happens to old bitcoin addresses? I've read that they never get destroyed, but do they get reassigned?
The story is I sent some bitcoin to an exchange using an address I've used with them before, but then found out that they had just retired/stopped using that address. I saw the transaction coming through though. Where did the bitcoin go?? Is there an official network that manages bitcoin addresses? Please help, it is a rather large sum.
Address in question:
12aAEnfc6192cm4KLfV5eY13jYRqy684Ym
transaction ID:
0db1e2f9f4233592b5f6ac5c881727e3c5694cfbd21af1744bfb11d069a1ae2d
What happens to old bitcoin addresses? I've read that they never get destroyed, but do they get reassigned?

Bitcoin addresses are not reused or reassigned to anybody under any circumstances.

The story is I sent some bitcoin to an exchange using an address I've used with them before, but then found out that they had just retired/stopped using that address.

This is almost certainly a scam. There is no reason to ever &quot;stop using&quot; an address, especially as the one you're referencing contains over half a million dollars of value. If they had lost access to their own funds that's not really your responsibility, but that seems like a highly unlikely story.

Is there an official network that manages bitcoin addresses?

No.