Can Apple im SMS operators find it?

I can't find it. This is a function designed by mobile phone manufacturers, and there is no record in the operator's business hall. When imessage is activated, you need to send a short message to the server to activate it. However, after the server is activated, the information will be sent through Apple's server through the network, and the mobile phone traffic of the operator will not be used, so the operator will not record it.