Is there any good reason to be looking for incomplete addresses? If you have your seed phrase or private key, they can generate your complete address anytime that you want it.
I have seen people on this forum looking for some missing characters of a private key, or how to decrypt a BIP38 encrypted paper wallet, or looking for some missing word of a seed phrase. That is normal for obvious reasons, which is to be able to access the private key to spend the coins in connection with them.
how can i check short crypto adresses?
Is there any good reason you are looking for a way to make the incomplete characters of an address complete?