The alien number, or A-Number, is a unique identifier used by U.S. immigration authorities to track an individual’s immigration history. This number is essential for filing applications, checking case status, and communicating with agencies like USCIS. For noncitizens, knowing where to locate the A-Number can save time and reduce confusion during the immigration process. This guide explains common places to find the A-Number, how to access it online, and best practices to protect this sensitive information.
What Is an Alien Number
An A-Number is a unique, nine-digit identifier assigned by U.S. Citizenship and Immigration Services (USCIS) or the former Immigration and Naturalization Service. It may appear with an A prefix followed by digits (for example, A012345678). The A-Number is used across multiple immigration processes, including green card applications, naturalization, asylum cases, and instances requiring background checks. Understanding its location can help streamline interactions with immigration authorities and ensure accurate record matching.
Where to Find Your A-Number on USCIS Notices and Documents
Several official documents display the A-Number. Common places to check include:
- Approval notices and decisions from USCIS, such as Form I-129 or Form I-130 approvals, often show the A-Number near the top or in the applicant information section.
- Notice of Action (Form I-797) documents typically include the A-Number, especially in correspondence related to petitions, applications, or changes of status.
- Your permanent resident card (Green Card) lists the A-Number on the front, usually near the name and card number.
- Employment authorization documents (EADs) and advance parole documents often display the A-Number in the credential details or eligibility section.
- Immigration court documents, orders, or notices can include the A-Number, particularly in cases involving cancellation of removal or asylum.
If you receive any official mail from USCIS or other immigration agencies, examine all pages carefully. The A-Number may appear as a single line or as part of a longer identifier. If you have trouble locating it, look for labels such as “A-Number,” “A-Number/USCIS,” or “Admission No.” on the document.
Online Resources to Locate Your A-Number
Online access provides a convenient way to retrieve your A-Number. Useful options include:
- USCIS Online Account: After creating an account, you can view case history, notices, and any associated identifiers, including the A-Number. This is especially helpful for case-specific updates.
- USCIS Case Status Online: If you have a receipt number for a petition or application, you can view status and associated identifiers, which may include the A-Number shown on the record.
- Ethics and FOIA Requests: If your records are not readily available, a Freedom of Information Act (FOIA) request can retrieve immigration file copies that display the A-Number. This process may take time but can be worthwhile for a complete record.
- Former Agency Portals: Some states or employers use portals for immigration documentation. If these portals manage your immigration case, they may display the A-Number in your profile or document downloads.
When using online resources, ensure you are on official government sites (ending in .gov) or trusted partner portals. Always verify the page URL and look for secure connections (https) before entering any personal information.
When to Use Your A-Number and Privacy Considerations
The A-Number is required in many immigration processes. Users commonly need it for:
- Filing applications for family petitions, work authorization, or adjustment of status.
- Checking the status of a pending case or appointment notices.
- Communicating with USCIS about corrections, requests for evidence, or notices of decisions.
Because the A-Number is sensitive personal information, it should be shared only with trusted immigration professionals, employers who require it for work authorization, and official government portals. Do not post the A-Number in public forums or expose it in insecure communications. If you suspect exposure, contact USCIS or consult an attorney to determine the appropriate steps for safeguarding your record.
Tips to Keep Your A-Number Safe
Protect the A-Number like any critical personal data. Practical security steps include:
- Store physical and digital documents containing the A-Number in a secure, access-controlled location.
- Use strong, unique passwords for online accounts that display or store immigration information, and enable two-factor authentication where available.
- Be cautious with email and messaging; avoid sending the A-Number in non-secure channels unless required and encrypted.
- Regularly review your immigration records for accuracy and report any discrepancies to USCIS promptly.
- Consider a dedicated note or password manager entry for quick access during filing or appointments, without exposing the number broadly.
Additional Considerations for Special Scenarios
Some individuals may have multiple identifiers related to immigration databases. In rare cases, an applicant might have an old A-Number from prior records or a temporary identifier during transitional processes. If you believe your records show conflicting or missing A-Numbers, request a copy of your immigration file to confirm the correct identifier. An attorney can help interpret discrepancies and advise on corrective actions with USCIS or other agencies.
Practical Quick-Reference Checklist
- Check official USCIS notices: I-797, approvals, and card notices often list the A-Number.
- Inspect the Green Card and EAD for the A-Number on the card data.
- Use your USCIS online account to view case history and identifiers.
- Request a FOIA or contact a licensed attorney if records are inaccessible.
- Safeguard the A-Number and limit sharing to verified channels only.
Knowing where to locate the A-Number reduces delays and helps ensure that immigration processes proceed smoothly. By leveraging official notices, online portals, and careful record-keeping, individuals can manage their immigration responsibilities with greater confidence and security.