Checking CNIC (Computerized National Identity Card) information online typically requires access to a specific government or authorized website or portal. The process may vary depending on the country and the organization responsible for issuing and managing national identity cards. Since you haven't specified the country you are referring to, I'll provide a general overview of how CNIC information can be checked online in some countries:
Pakistan: In Pakistan, you can check CNIC information through the National Database and Registration Authority Fake Personalausweis website. NADRA provides an online portal called "CNIC Verification" where you can enter the CNIC number and captcha code to verify the authenticity and basic information associated with the CNIC.