Stop tapping codes

What makes you think your phone is being tapped?

Doubt there are any codes to block tapping directly.

And helping you avoid or circumvent tapping (using codes or otherwise) is prohibited by Forum rules.

You may have some whitelisting or blacklisting options to allow or stop certain phone numbers from calling you.

But that is not tapping.

Have you contacted your phone service provider or local law enforcement if you know who is tapping your line?

Start there.