U.S. immigration · Receipt numbers
USCIS receipt number, format-checked.
Paste a receipt number, with or without dashes or spaces, and see whether it has the format USCIS describes: 3 letters followed by 10 numbers, 13 characters in all. Nothing you type leaves your browser.
USCIS defines a receipt number as a unique 13-character identifier: 3 letters, such as EAC, WAC, LIN, SRC, NBC, MSC or IOE, followed by 10 numbers. A number starting with IOE or SRC follows the same rule.
Check a receipt number
Result
Enter a receipt number to check its format.
To see the status of a real case, use the official USCIS Case Status Online tool.
Prefixes named by USCIS
The USCIS glossary lists these three-letter examples: EAC, WAC, LIN, SRC, NBC, MSC and IOE. This checker marks a number as “recognised” when it starts with one of them. Any other 3-letter prefix is reported as well-formed but unlisted, not as wrong. The glossary also names a HART service center; that label is longer than three letters and is not treated as a receipt prefix here.
The checker does not decode the ten digits. This page does not claim to know what any part of the digit string means.
Primary source: USCIS Glossary, “Receipt Number”. Retrieved 30 September 2026.
Frequently asked questions
What does a valid format prove?
Only that the text is 3 letters followed by 10 digits. It does not prove USCIS issued the number or that a case exists.
My number starts with IOE or SRC. Is that normal?
Yes. Both appear in the USCIS glossary as example prefixes. Check that the total is 13 characters.
Where do I find my case status?
Enter the number in the official USCIS Case Status Online tool. This page cannot look up cases.
Format check only — not legal advice
A format check confirms the pattern, not that the number was issued. Use official USCIS notices and tools for anything about your case.