Check your Selective Service registration confirmation card or email
Look up your registration status on the Selective Service System website
Call the Selective Service System at 1-888-655-1825
Contact the Selective Service System by mail with your full name, date of birth, and Social Security number
Ask the school, employer, or agency that requested it if they have your number on file
Review any official correspondence you received from the Selective Service System
If you never registered, use the Selective Service System website to verify whether you were automatically registered or need to register now