How do I find my Alien Registration Number (A-Number)?

It is important to understand that the Alien Registration Number (or A-Number) is a unique identifier used by the United States Department of Homeland Security to track your immigration history.

Although many immigration processes involve this number, it is worth noting that, in the specific context of the H-1B visa, not everyone automatically receives an A-Number – this number is more commonly assigned to people applying for permanent residence (Green Card) or involved in other adjustment of status processes.

If you have participated in any previous immigration process involving an A-Number, it is likely to appear on official documents issued by the United States Citizenship and Immigration Services (USCIS). You can locate it, for example, on resident cards (Green Card), Employment Authorization Documents (EAD), or Notices of Action.

Look for a number with 7 to 9 digits, sometimes preceded by the letter “A”. If you are not familiar with these documents, review your USCIS copies or access your online profile on the official U.S. platform.

Stay compliant with immigration laws and consult official sources if in doubt. Beware of scams and seek guidance from qualified experts to avoid compromising your case.

For more information, check the USCIS website.

Victoria Harper

Editor-in-Chief

Meet the author

Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.