It can be found.

Real-name registrations can basically be found.

There are also mobile phone numbers, bank account numbers, etc., including where to go by train or plane. The child’s ID number is on the page of the household registration book. Even if you have not applied for an ID card, you still have the ID number. You can check it directly.

You will know next time. There is no way to check it in other places. Even if you apply to the public security bureau, they will not check it for you.