Federal Register Docket Number: Find the Rulemaking Record

The short version

A Federal Register docket number, often shown as a docket ID or docket number, points to the public record behind an agency action. It is the search key you use to move from one Federal Register document to the related file on Regulations.gov.

The docket can include the proposed rule, supporting analyses, public comments, hearing materials, extensions, corrections, reopening notices, and later final-rule documents. It is not the same thing as a Federal Register document number, which identifies one published document. It is also not the same thing as a RIN, which is a regulatory identifier used in federal rulemaking planning, or a CFR citation, which points to codified regulatory text.

If you are trying to understand a rulemaking, start with the Federal Register document, copy the docket ID exactly, then search that ID on Regulations.gov. For ongoing monitoring, create a free RegWatch watch so new matching Federal Register documents and public-comment deadlines come to you.

Where to find the docket number

Most rulemaking documents and many notices list a docket number near the top of the Federal Register document or in the instructions for comments.

• Open the document on FederalRegister.gov and scan the metadata, headings, agency name, and identifiers.
• Search within the page for docket, docket ID, docket no., or Regulations.gov.
• Check the Dates section for comment deadlines, effective dates, compliance dates, hearing dates, and any stated deadline rules.
• Check the Addresses section for the exact submission instructions. Agencies often tell commenters to identify submissions by docket ID, docket number, or RIN.
• Copy the full identifier, including letters, numbers, and hyphens. A small typo can send you to the wrong record or to a single document instead of the docket.

Formats vary by agency. You might see IDs that start with an agency abbreviation, a year, and a sequence number, but there is no single format that fits every proceeding. Treat the Federal Register document and the matching Regulations.gov docket page as the official lookup path.

How to use it on Regulations.gov

Regulations.gov is the main public portal for federal rulemaking dockets from participating agencies. The docket ID helps you review the record instead of reading one notice in isolation.

• Paste the docket ID into the Regulations.gov search box.
• If search results show individual documents first, use the official filters or open the matching docket result.
• Review the documents and comments attached to the docket.
• Use filters to separate proposed rules, rules, notices, supporting materials, and public submissions.
• When a comment period is open, follow the instructions in the Federal Register document before submitting. Some proceedings have special methods, required identifiers, or limits.
• Save the docket URL and the Federal Register citation so you can trace the record later.

A docket can keep growing after the first publication. Agencies may extend or reopen comment periods, publish supplemental proposals, post additional supporting materials, or publish a final rule that explains the action taken. Regulations.gov is the right place to check the collected record, while FederalRegister.gov is the right place to verify the published rule or notice text.

What the docket tells you, and what it does not

The docket helps you find the record, but it does not by itself tell you whether a rule is final, effective, enforceable, or within an agency's legal authority.

A proposed rule or notice of proposed rulemaking announces what an agency proposes to do and usually invites public comment. There is no universal public-comment length for every action. The actual deadline is the one stated in the Federal Register document, and FederalRegister.gov and Regulations.gov should be checked for extensions, reopenings, corrections, or withdrawals.

A final rule is the adopted rule. When it follows notice-and-comment rulemaking, it normally explains the agency's reasoning and addresses significant issues raised in the comments. Some final rules, such as interim final rules or direct final rules, use different procedures, so rely on the document's action, dates, authority, and supplementary information sections rather than the docket number alone.

Notices are broader. They can announce meetings, requests for information, information collections, guidance, availability of documents, petitions, or other agency actions. Some notices have dockets and comment periods, but not every notice is a rulemaking.

The CFR is where general and permanent federal regulations are codified after final rules amend the Code of Federal Regulations. The eCFR is an editorial online version that is updated regularly and generally current within two business days, but legal research should verify the Federal Register source citation and effective date, especially around corrections, delays, or withdrawals.

A docket also does not create agency authority. Agencies must rely on authority delegated by statute or another valid legal source. To assess authority, read the Federal Register document's authority citation and explanation, then check the underlying statute or official agency materials.

A practical lookup workflow

Use the docket number when you need the full context behind a regulatory action, not just the notice that appeared in the daily Federal Register.

• Find the Federal Register document for the agency action.
• Record the Federal Register citation, publication date, agency, action type, RIN if listed, and docket ID.
• Search the docket ID on Regulations.gov and open the docket record.
• Read the proposed rule, supporting materials, and comments before relying on a summary.
• If there is a final rule, compare the final text with the proposal, check the effective date, and note any compliance dates.
• If the rule changes regulated duties, confirm the current CFR or eCFR text and any later corrections, delays, stays, or withdrawals.
• Set a RegWatch alert for the topic, agency, or docket terms so later Federal Register activity is not missed.

For more background on monitoring the daily publication stream, see the RegWatch guides.