As I mentioned regarding the confirmation of service, we need to identify the service provider to issue a warrant to obtain further information. This is one of our requirements for obtaining a standard production order.
Thanks to the confirmation of service, we can confirm that a specific company provides services to a specific telephone number or IP address, but we still don't know who the customer using that service is. We also don't know if there are other services available or offered by the company to the same person.
Normally, we use basic information—such as details that identify the person—to charge someone who claims they didn't access a particular account. If we confirm that company X is providing the service, we will then request information that supports the suspicion regarding the customer.