What's the phone number to check the social security card number?

The telephone number for social security inquiry is 12333. When the insured person inquires about social security related information, he can also use the window inquiry method in addition to calling social security. At this time, as long as the insured person directly carries his valid certificate and social security card to the social security agency window for inquiry.

Legal objectivity:

"Measures for the Administration of Social Insurance Personal Rights and Interests Records" Article 14 The social insurance agency shall disclose the inquiry procedures of social insurance personal rights and interests records to the insured and their employers, clarify the contents available for inquiry, and provide inquiry services through social insurance agency outlets, self-service terminals, telephones and websites.