dc=tools
The first three parts of a GUID are stored in reverse byte order. Paste it in any form to get the others and a filter. Everything runs in your browser, so nothing you paste leaves your machine. The page's Content-Security-Policy also stops it from sending anything, which you can check in its source.
Paste a GUID as you see it, hex, base64 from an LDIF export, or the escaped form from a filter. The first three parts are stored in reverse byte order, which is why the escaped form looks scrambled next to the GUID.