How to check the number of a telecom landline?

The method for inquiring the local number of the telecommunication landline is as follows:

1, the simplest thing is to call a friend's mobile phone. If you have caller ID function, you can see your mobile phone number.

2. Call the customer service, and let the customer service tell you. Telecom users need to dial 10000.

3. Dial "# #" to report calling number.