Docket Number vs RIN: How to Track Rules

The short answer

A docket number and a Regulation Identifier Number, or RIN, are both rule-tracking IDs, but they answer different questions.

A docket number, often called a docket ID on Regulations.gov, points to the public docket for a rulemaking or other agency action. For participating agencies, that docket is where you often find the proposed rule, supporting materials, public comments, agency notices, and related documents. If you want to file or read comments, start with the docket ID and confirm the deadline on the official document page.

A RIN points to a regulatory action in the Unified Agenda and on RegInfo.gov. RegInfo says RINs help the public identify and follow each regulatory action or rulemaking proceeding in the Unified Agenda, the Federal Register, and RegInfo.gov. A RIN is useful when you want to connect planning records, Federal Register documents, and OIRA review records when review applies.

How they differ

Use the docket number for the public file. Use the RIN for the regulatory action.

• Docket number: an agency-managed record ID, commonly shown as a docket ID. It is the practical key for searching Regulations.gov, reading comments, finding attachments, and submitting a public comment before the deadline.
• RIN: a regulatory action ID assigned for Unified Agenda entries by the Regulatory Information Service Center. RINs help connect the same action across the Unified Agenda, RegInfo.gov, and Federal Register rule documents when those records include the RIN.
• Federal Register citation: not the same as either ID. A citation such as 89 FR 12345 points to a published document in a specific issue of the Federal Register.
• CFR citation: also different. A CFR citation points to a section or part of the Code of Federal Regulations that a final rule creates, changes, or removes.

Where you see them in rule tracking

Federal Register documents can carry several identifiers because each one serves a different job.

The Federal Register publishes agency rules, proposed rules, notices, and presidential documents. Proposed rules generally explain what an agency is considering and solicit public comment. Final rules announce adopted regulatory text and usually include an effective date. Notices can announce meetings, information collections, comment-period extensions, guidance, or other agency actions. Check FederalRegister.gov and the official PDF when legal precision matters.

The docket number is most important when you need the public record: the proposal, comments, supporting materials, and later related documents. The RIN is most useful when you are tracing a regulatory action through the Unified Agenda, Federal Register publications, and any OIRA review record. Some notices and non-rulemaking actions may not have a RIN because they are not listed as a specific regulatory action in the Unified Agenda.

Which one should you search?

Search with the identifier that matches your task, then cross-check the other fields on the official pages.

• To comment on a proposed rule, search the docket ID on Regulations.gov and confirm the comment due date on the Regulations.gov or FederalRegister.gov document page.
• To follow a rule from planning to final publication, search the RIN on RegInfo.gov and FederalRegister.gov.
• To confirm the legal text that changed, use the Federal Register document and the affected CFR parts listed in the heading.
• To watch future documents automatically, set a topic, agency, docket term, or RIN in RegWatch so you get new Federal Register matches and comment deadlines by email.

A simple tracking workflow

For real monitoring, save both IDs whenever both appear.

Start with the Federal Register document. Capture the agency, title, publication date, document type, comment deadline if one exists, effective date if one exists, affected CFR parts, docket number or docket ID, and RIN. Then open the Regulations.gov docket to read comments and supporting materials. Finally, check RegInfo.gov when you need the Unified Agenda stage, OIRA review history, or planned future actions.

If the IDs disagree or one is missing, do not guess. Use the Federal Register document as the published notice, the Regulations.gov docket as the public record for comments and attachments, and RegInfo.gov as the planning and review source for RIN-based tracking.