Document number attribute
The Federal Register document number, also printed as the FR Doc. number.
- Type:
string - Data types: Federal Register document
- Fields:
document_number
The Federal Register assigns this number when it publishes a document, such as 2026-20317. Corrections carry a C1- style prefix, such as C1-2025-05430. Use it to look a document up on federalregister.gov or to filter a search to known documents.
Notes
- Before 2016 the Federal Register reused document numbers across years, so a number alone does not always identify one document. Pair it with the publication date when matching older records.