You need to log in to your personal account in “Government Services”, open the “SIM cards” section and see a list of all numbers assigned to your passport. If there are numbers you do not recognize, you can close or reject them.
Another way is to contact your telecom operator. You can call the support service or visit a contact center in person with your passport. Employees will provide you with the full list of registered SIM cards.
This check is particularly useful for detecting fraud or unauthorized use of your data. Experts recommend checking registered numbers regularly.
Source: Ferra

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