# RN Number Search: How to Look Up an RN and What the Result Means

_By GradeThread Team · Published October 7, 2026_

> An RN number search tells you which company registered a clothing tag, not when the garment was made. Here is how to run one and use the result when you grade.

An RN number search means entering the digits from a clothing tag into the FTC's Registered Identification Number database to see which company registered it. It identifies a business, not a production year, so treat it as one clue and not a verdict.

Here is the scenario that sends most resellers to the database. You pull a boxy chore coat from a thrift rack. The tag says RN, then a string of digits, and the brand name is long gone from the label. You want to know who made it, whether the listing story holds up, and what condition tier it earns. The search answers the first question. The rest takes your hands and your eyes.

## What an RN Number Is

RN stands for Registered Identification Number. The Federal Trade Commission issues these numbers to US businesses that make, import, distribute, or sell textile, wool, or fur products. A company can put its RN on the label in place of its full name, which is why you see small, nameless tags on so many garments.

Three facts shape how you use one:

- **It is tied to a business, not a garment.** The same RN appears on every item that company labels with it.
- **It can outlive the brand.** Companies get acquired, rename themselves, or stop operating, and the record may not reflect that cleanly.
- **It only applies to US-marketed goods.** Items made for other markets may carry no RN at all, and that is not a red flag by itself.

If you want the broader picture of how tags fit into verification, our walkthrough on [checking authenticity on used clothing](/blog/how-to-check-for-authenticity-on-used-clothing) covers the full sequence.

## How to Run an RN Number Search

The process takes about two minutes once you know where to look. Follow these steps in order:

1. **Find the RN on the garment.** Check the sewn-in care or content label, usually at the side seam or the back neck. It reads as "RN" followed by digits, often five or six.
2. **Photograph the label.** Capture the RN, fiber content, country of origin, and any style or lot numbers. You will want this for your listing and your grading notes.
3. **Open the FTC RN database.** Search on the FTC's official site for its Registered Identification Number lookup.
4. **Enter the digits only.** Type the number without the letters "RN" and run the search.
5. **Read the business record.** Note the company name, the address, and any other listed details.
6. **Cross-check the result against the garment.** Compare the company to the brand on the label, the construction, and the fiber content.
7. **Record what you found.** Save the company name and your confidence level in your listing notes.

If the search returns nothing, do not panic. Records can be incomplete, numbers can be misread on a faded tag, and some tags carry a WPL or CA number instead of an RN. Those are different registries.

## What the Result Tells You, and What It Does Not

A clean match gives you a company name. That is useful, but it is narrower than many listings imply.

| The search can tell you | The search cannot tell you |
| --- | --- |
| Which business registered the number | The year the garment was made |
| Whether the tag matches a plausible manufacturer | Whether the piece is authentic |
| A lead for researching the brand's history | Where the item was actually sewn |
| A reason to look closer when the record conflicts with the label | The condition of the garment |

That last row matters. An RN lookup says nothing about wear. A perfectly matched tag can sit on a jacket with a failing lining and a sour smell. We cover the dating limits in more depth in our post on [RN number lookup and dating a garment](/blog/rn-number-lookup), but the short version holds: use the RN as one data point in a larger read.

## Using an RN Result to Support a Listing

Once you have a company name, you can do real research. Search the company alongside the style details on the tag. Look at old catalogs, archived listings, and sold comps on eBay to see how similar pieces were described and priced.

Then be careful with your wording. Compare these two lines:

- **Weak and risky:** "Made in the 1970s, rare vintage."
- **Honest and defensible:** "Tag carries an RN registered to a US manufacturer; construction and label style are consistent with mid-century workwear."

The second line gives the buyer something checkable. It also protects you if a buyer opens a not-as-described case on eBay or Poshmark. Claims you cannot support are where disputes start. The facts you can support belong in the item specifics: brand, material, and country of origin where listed.

## Where the RN Fits in a Condition Grade

The RN does not move the grade. Condition comes from the garment itself, scored across five factors: Fabric Condition, Structural Integrity, Cosmetic Appearance, Functional Elements, and Odor & Cleanliness.

What the RN does do is shape the context around the grade. It helps you identify what you are holding, which tells you what to check hardest. A workwear label points you to stress seams and hardware. A knitwear maker points you to pilling and underarm seams. A wool tailoring label points you to shoulder structure and lining.

Here is how the tiers map once you have inspected the piece:

- **NWT and NWOT:** Unworn. The RN may match a deadstock or retail label, but you still confirm there is no wear, odor, or storage damage.
- **Excellent:** Light, even wear with sound fabric, seams, and hardware.
- **Very Good:** Minor, disclosed flaws that do not affect use.
- **Good:** Visible wear, still fully wearable.
- **Fair:** Real wear or a functional flaw that limits value.
- **Poor:** Significant damage; priced as a project or for parts.

A common failure here is letting a good story inflate the grade. A rare maker found through an RN search does not turn a Fair coat into an Excellent one. Price reflects the maker and the condition separately, and buyers check both. Our piece on [price realization by grade tier](/blog/price-realization-by-grade-tier) shows how much a single tier can move a sale.

## Common RN Search Mistakes

- **Treating the result as a date.** Registration happened once. Production ran for years.
- **Misreading digits.** Faded tags turn 8s into 3s. Try a magnifier and good light before you conclude there is no record.
- **Confusing RN with other numbers.** A style number or a CA number is not an RN.
- **Skipping the garment.** A tag can be moved, replaced, or sewn onto a different piece. Check that the label sits where the original would and that its stitching matches.
- **Stopping at the lookup.** The search is step one of identification, not a substitute for inspection.

## Try It on One Garment

Pick a piece from your current stock with an RN on the tag. Run the search, note what you learn, then inspect the garment against the five factors. If you want a standardized read on the condition side, grade that one garment with GradeThread and see the full report: a 1.0 to 10.0 grade, the factor-by-factor detail, and a certificate a buyer can verify. One item is enough to see whether it fits how you list.

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