Do I Have an Alien Registration Number

An alien registration number, or A-number, is a unique six-to-nine-digit identifier used by U.S. Citizenship and Immigration Services (USCIS) and other government agencies to track immigration records. This number is assigned to noncitizens who apply for benefits, adjust status, or obtain lawful immigration documents. Knowing whether you have an A-number, where to find it, and how it’s used can prevent delays in applications and ensure your records are correctly linked across agencies. This guide explains what an A-number is, how it appears on official documents, and steps to confirm or obtain one.

What Is An Alien Registration Number

The A-number is a unique identifier assigned to non-citizens by U.S. immigration authorities. It typically starts with the letter A followed by nine digits (for example, A012-345-678). In practice, the A-number remains constant for an individual, even as they apply for different benefits or change immigration status. It helps agencies track applications, decisions, and interactions across the immigration system. Most commonly, the A-number is used in USCIS files, Department of Homeland Security databases, and interactions with immigration courts.

Where Is An A-Number Found

A-number placement varies by document and stage in the immigration process. It may appear on immigration notices, receipts, and correspondence. Common locations include the top right corner of official notices, the lower portion of form letters, and in the file number fields within electronic case summaries. Some documents display the A-number in a dedicated field labeled “A-Number” or “Alien Registration Number.” If a form asks for an “A-Number,” that is the identifier to provide.

• Official notices: USCIS approval notices, request for evidence (RFE) notices, and decision letters often show the A-number near the top.
• Green card or work authorization: Permanent residents (green card holders) and certain employment documents can include the A-number, especially if the file predates the person’s current status.
• Border and parole records: Some inbound or parole-related records may reference the A-number, particularly for individuals with prior entries or parole in place.
• Online account: When you create a USCIS account or access your immigration portal, your A-number may be listed in your profile or case details.

If you have trouble locating it, you can contact USCIS or consult your paper files. Do not rely on names or dates of birth alone; the A-number is the most reliable cross-reference across documents.

How It Applies To Different Immigrant Documents

The A-number is relevant across several major immigration processes. Understanding which documents involve the A-number helps applicants prepare correctly and avoid delays.

Permanent Residence And Naturalization

Applicants for a green card or naturalization are typically assigned an A-number early in the process. The number remains the same even as statuses change. It is used in I-485 (Application to Register Permanent Residence or Adjust Status), I-130 (Petition for Alien Relative), and subsequent USCIS case updates. In naturalization, the A-number helps tie together prior immigration history with the new citizenship application.

Travel And Documentation

For noncitizens with an A-number, travel documentation such as advance parole or re-entry permits often references the A-number in processing records. The A-number also appears on notices about work authorization, such as EAD (European? No—Employment Authorization Document) cards for eligible noncitizens. Keeping the A-number handy ensures the right record is reviewed during travel or re-entry procedures.

Special Programs And Asylum

Individuals applying for asylum, refugee status, or certain humanitarian protections may receive an A-number as their case is entered into government systems. In these cases, the A-number enables agencies to coordinate interviews, determinations, and follow-up appointments. For DACA recipients, the A-number often appears in case files and renewal notices, linking prior approvals with current requests.

How To Get Or Confirm Your A-Number

If you are unsure whether you have an A-number or need to locate it, several steps can help. The A-number is typically assigned automatically when an immigration case is created, but it may not appear on every document you receive.

1. Review USCIS notices Look for a line labeled “A-Number” or “Alien Registration Number” on approval notices, RFEs, or other correspondence.
2. Check your immigration forms Examine forms like I-485, I-130, I-130A, I-765, I-539, or any prior case documentation for an A-number.
3. Log into official portals Access your USCIS online account or Department of Homeland Security portals and review case details or personalized profiles for the A-number.
4. Consult your attorney or accredited representative If you are working with legal counsel, they can locate or confirm your A-number across files and databases.
5. Request a copy of your file Under the Privacy Act or Access to Records Act, you may request a personal immigration file to locate the A-number within your records.

If you still cannot locate the A-number, contact USCIS customer service or seek legal guidance. Do not provide sensitive information to unverified sources outside official channels.

Common Myths And Misunderstandings

• My A-number is the same as my social security number. Incorrect. An A-number is an immigration-specific identifier and does not replace or duplicate a Social Security Number (SSN).
• Everyone has an A-number. Not every individual outside the immigration system has an A-number. It is typically issued to those with active or pending immigration cases, permanent residency, or certain humanitarian programs.
• An A-number changes over time. The A-number remains constant for the person and is not reassigned if status or documents change.
• Only attorneys see A-numbers. While attorneys access these numbers, USCIS notices and online portals also display A-numbers to applicants and beneficiaries.

Tips To Protect Your A-Number

Protecting the A-number is essential to prevent identity theft or misuse. Consider these best practices:

• Keep the A-number in a secure, private location separate from public documents.
• Share the A-number only with trusted government agencies and authorized representatives.
• Monitor your immigration case status regularly through official portals to detect discrepancies early.
• Be cautious with third-party services that request your A-number for “verification”—verify legitimacy first.