An Alien Registration Number, often abbreviated as A-Number, serves as the unique identifier assigned to every non-citizen in the United States. This number is generated by U.S. Citizenship and Immigration Services (USCIS) the moment an individual files an application for permanent residency, a visa, or any other benefit that triggers an official immigration record. Understanding this identifier is crucial for navigating the complexities of the U.S. immigration system, as it acts as the cornerstone for tracking an individual’s status, history, and interactions with government agencies.
Why the A-Number Matters in Immigration Processing
While a Social Security Number is typically associated with work authorization for U.S. citizens and permanent residents, the A-Number fulfills a similar role for individuals who are not yet authorized to work or who are in transitional phases of their immigration journey. This number is required on virtually every official form, including employment authorization applications, travel document requests, and status adjustment petitions. Without this specific identifier, USCIS case managers cannot access or update an applicant’s file, making it essential for maintaining the integrity of one’s immigration record.
Where to Locate Your Alien Registration Number
Locating this number is usually straightforward, as it appears on the physical documentation issued by USCIS. For most applicants, the A-Number is printed directly on the front of the Permanent Resident Card, also known as the Green Card. It is typically located in the top section of the card, formatted as a string of seven to nine digits preceded by the letter 'A'. Additionally, the number is listed on the approval notice for any immigration application, such as the I-551 stamp received upon entering the U.S. as a permanent resident or the I-797 approval notice for various petitions.
Distinguishing Between A-Number and Other IDs
It is important to differentiate the A-Number from other identification codes to avoid confusion during administrative processes. The receipt number, for example, is the case file number used to track the current status of an application; it is usually a thirteen-character string of letters and numbers that changes with each submission. In contrast, the A-Number is a permanent identifier linked to the individual themselves, not a specific application. Similarly, while a visa stamp in a passport contains a code, the A-Number is the definitive number used within the USCIS system to pull up the complete history of the person, regardless of visa type.
Common Misconceptions About the A-Number
One frequent misunderstanding is that an A-Number is the same as a work authorization number. While an immigrant can use their A-Number to apply for an Employment Authorization Document (EAD), the EAD card itself will display a separate number for work purposes. Another misconception involves its longevity; unlike a Social Security Number, which is issued for life, the A-Number is tied to the individual’s status. If an immigrant naturalizes to become a U.S. citizen, the A-Number typically becomes inactive, as citizens are identified by their Social Security Numbers for most official purposes.
