The most common "company ID" for auto, home, and life insurance is the .

You can use the NAIC Consumer Insurance Search Tool to look up a company by name and find its five-digit code.

It is usually printed on the front of your insurance ID card , often near the company's name, though it may not be explicitly labeled as "NAIC". Examples: GEICO: 22063 Progressive: 24260 State Farm: 25143 2. Health Insurance Identifiers