No, you cannot know the PAN card number by a mobile number. The PAN card number is a confidential document and cannot be shared with anyone without the consent of the PAN card holder.

However, you can know your PAN card number by your name and date of birth. To do this, you can visit the Income Tax Department’s e-filing website and click on the “Know Your PAN” option under the “Quick Links” section. You will then be required to enter your name, date of birth, and mobile number. You will receive an OTP on your mobile number, which you will need to enter to verify your identity. Once your identity is verified, you will be able to view your PAN card number.

You can also know your PAN card number by calling the Income Tax Department’s toll-free number 18001801961. You will need to provide your name, date of birth, and mobile number to the customer service representative. The customer service representative will then verify your identity and provide you with your PAN card number.

Please note that you should not share your PAN card number with anyone without your consent. Sharing your PAN card number can put you at risk of identity theft and financial fraud.