1. Visit the website for inquiry: directly visit this website for IP inquiry, and inquire in "Inquire about your own IP". Finally, your IP address and operator information will be displayed.
2. Check the equipment label: the label of the optical cat or router equipment will be marked with "XXX (Telecom/Mobile/Unicom)" to confirm that your optical fiber is the corresponding operator.
3. Consult the operator: contact the customer service of the corresponding operator and provide your broadband account. They can inquire whether your optical fiber is telecom or mobile.
I hope the above information can help you solve the problem. Please feel free to let me know if you have any other questions.