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EOIR Tracker

What is an A-Number and where do I find it?

An A-Number is a number the U.S. government gives many people who are not citizens, to identify their immigration records. Its full name is Alien Registration Number. You need it to check your case at the immigration court. You'll find it on your green card, your work permit, and letters from the government and the court.

What does it look like?

It is the letter A followed by 7, 8 or 9 digits, for example A123456789. Sometimes it is written with spaces or dashes: A 123 456 789.

Many forms ask for 9 digits. If yours has fewer, add zeros at the front, right after the A, until there are 9. For example, A12345678 becomes A012345678, and A1234567 becomes A001234567.

EOIR's phone line also asks for 9 digits: if yours has 8, enter a 0 first.

Where do I find it?

Look on your immigration papers:

  • Your green card (Permanent Resident Card), next to “USCIS#”. On older cards it may be on the back.
  • Your work permit (EAD), next to “USCIS#”. It is your A-Number without the A.
  • Letters from the Department of Homeland Security (DHS), such as from USCIS or ICE. For example, the Notice to Appear.
  • Notices from the immigration court, such as a hearing notice.

Each person has their own A-Number. If your partner or children also have immigration papers, each of them has their own.

If you can't find it, ask the lawyer or representative who helped with your papers.

Is it the same as a USCIS receipt number?

No. When you send USCIS an application, you get a notice with a receipt number. They are different numbers:

  • A receipt number has 13 characters: 3 letters and 10 digits, like IOE0123456789. The letters are, for example, EAC, WAC, LIN, SRC, NBC, MSC or IOE.
  • Each application gets its own receipt number. The A-Number belongs to the person.
  • Your USCIS online account number is not your A-Number either.

To check your immigration court case, at acis.eoir.justice.gov or by phone, you need the A-Number, not a receipt number. Here's how to check it.

Your A-Number in EOIR Tracker

In the app you add your A-Number and country, and the app checks the court for you. Your A-Number never appears in a notification or a link. We never sell it, and we share it only to look up your case.