If you mean carrier blacklisting of a stolen phone, that is not something Apple does. I suspect they would need the IMEI but you would need to contact a carrier for their exact requirements.
This thread has been closed by the system or the community team.
You may vote for any posts you find helpful, or search the Community for additional answers.
Locking an unlocked phone
Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.