A-Number guide

EOIR Case Status by A-Number: How to Enter It

EOIR’s Automated Case Information System (ACIS) finds your immigration court case by your A-Number. It is strict about the format, so a number typed the wrong way can come back with no case.[1]

This guide shows where to find your A-Number and exactly how to type it. CaseTicker never asks for your A-Number: you enter it only on EOIR's own site.

The basics

What an A-Number looks like

The A-Number begins with the letter A, followed by an 8- or 9-digit number. It is printed on all correspondence from DHS and EOIR, so look at any notice you received from either.[1]

It is not the same as a USCIS receipt number. A receipt number is 13 characters: 3 letters followed by 10 digits, such as a number starting with IOE. ACIS asks for your A-Number, not a receipt number.[1][3]

CaseTicker never asks for your A-Number. When you paste USCIS case data into our case tool, A-Numbers are dropped as soon as the data is read.

Typing it in

How to enter an 8- or 9-digit A-Number

ACIS always takes 9 digits and never the letter A. If your A-Number has 9 digits, enter those 9 digits. If it has 8 digits, enter a zero followed by the 8 digits.[1]

  • 9 digits: drop the A, type all 9

    On your notice
    A123456789
    Type in ACIS
    123456789

  • 8 digits: drop the A, add a 0 in front

    On your notice
    A12345678
    Type in ACIS
    012345678

These numbers are made-up examples. Use the digits on your own notice.

Online

Check your case by A-Number in ACIS

  1. 1

    Open ACIS

    Go to acis.eoir.justice.gov, the Automated Case Information System run by EOIR. EOIR is part of the U.S. Department of Justice, so the address ends in justice.gov.[1][2][4]

    Open ACIS(opens a new tab)
  2. 2

    Accept the disclaimer

    ACIS first shows a disclaimer: the site is for general information and is not a substitute for legal advice. Select I Accept to go on.[1]

  3. 3

    Enter your A-Number

    Type only the digits, without the letter A. A 9-digit A-Number is entered as is; for an 8-digit A-Number, type a zero first and then the 8 digits.[1]

  4. 4

    Choose your nationality

    Pick the country that best describes your nationality during your most recent immigration case. If you have more than one, ACIS asks you to pick one.[1]

  5. 5

    Pass the check and submit

    Complete the hCaptcha check and select Submit. If the captcha fails, ACIS asks you to try again in 5 minutes.[1]

If it does not work

When ACIS says "Invalid A-Number" or "No case found"

  • Count the digits

    You should have typed exactly 9 digits, with no letter A. An 8-digit A-Number needs the leading zero.[1]

  • Not every case is in ACIS

    ACIS shows certain cases only, and only the most recent primary case for an A-Number.[1]

  • Call EOIR instead

    Case information is also available by phone at 1-800-898-7180 or 304-625-2050 (TDD 800-828-1120).[2]

  • Ask the court

    For anything ACIS does not show, ACIS tells you to contact the immigration court handling your case.[1][5]

    Find an Immigration Court(opens a new tab)
Two different agencies

A-Number at EOIR, receipt number at USCIS

A-Number at EOIR, receipt number at USCIS
ComparedEOIRUSCIS
AgencyExecutive Office for Immigration Review, part of the Department of Justice[4]U.S. Citizenship and Immigration Services, part of the Department of Homeland Security[6]
What it handlesImmigration court proceedings, appeals and administrative hearings[4]Applications and petitions filed with USCIS[3]
Number you check withA-Number: the letter A and 8 or 9 digits[1]Receipt number: 3 letters and 10 digits, for example starting with IOE[3]
Where to checkACIS online, or by phone at 1-800-898-7180 or 304-625-2050[2]Case Status Online on uscis.gov, using the receipt number from your notices[3]

CaseTicker reads USCIS case data that you copy from your own my.uscis.gov account. It does not read EOIR cases, and it never asks for your A-Number. For a USCIS application, check your case free.

Related guides

Not legal advice. This guide is general information, written from the EOIR and USCIS pages listed below. CaseTicker is not affiliated with EOIR, the Department of Justice or USCIS, and it does not look up cases. For advice about your case, talk to an attorney or accredited representative.

Sources

Each page below was checked on . Numbers match the notes in the text.

  1. [1]EOIR Automated Case Information System (ACIS)
  2. [2]EOIR: Check Case Status
  3. [3]USCIS: Checking Your Case Status Online
  4. [4]EOIR: About the Office
  5. [5]EOIR: Find an Immigration Court
  6. [6]USCIS: About Us

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