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Enter your 9 digit a number

Enter Your 9 Digit A-Number: 2025

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The document is the Form N-600, Application for Certificate of Citizenship, issued by the U.S. Citizenship and Immigration Services (USCIS). It outlines the process for individuals to apply for a certificate of citizenship based on their eligibility as biological or adopted children of U.S. citizen parents. The form requires detailed personal information, including the applicant's background, parental details, and immigration status, along with sections for signatures and declarations.

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Versions	Form popularity	Fillable & printable
2024	4.2 Satisfied (32 Votes)
2017	4.8 Satisfied (126 Votes)
2015	4.4 Satisfied (163 Votes)
2012	4.2 Satisfied (67 Votes)
2011	4 Satisfied (42 Votes)

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We have answers to the most popular questions from our customers. If you can't find an answer to your question, please contact us.

What is the a file number for immigration?

The alien registration number is typically nine digits in length (preceded by an A), while the naturalization number is eight digits in length. On naturalization documents, the alien registration number is generally listed directly below the naturalization number. DO NOT USE THE NATURALIZATION NUMBER.

Where can I find my alien number?

A-Files are used to document aliens interactions with USCIS, Customs and Border Protection, and Immigration and Customs Enforcement. They include all an individuals official immigration and naturalization records and are identified by a unique A-Number.

What is the 9-digit number on a green card?

Your A-Number is identified as the Registration Number on your visa stamp. If your A-Number is fewer than 9 digits, insert a zero after the A and before the first digit to create a 9-digit number. For example, A12345678 would become A012345678.

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