Your car registration number is the number that identifies your specific vehicle and proves that you own it and have properly registered it in your state. This car registration number is the same as your license plate number. If your car is not in your immediate possession and you need to determine your car registration number for insurance or car permit applications, you can find it on your car certificate of registration.
Locate your car certificate of registration. This is the document that a state representative handed you when you received the license plates for your car. It is a good idea to make several copies of this document, keeping one in your car’s glove box and another in your home office.