What Is an ECCN? Export Classification Number

An Export Control Classification Number (ECCN) is the five-character code that the Bureau of Industry and Security uses to identify a controlled item on the Commerce Control List and decide whether your export needs a license. It is the single most important data point in U.S. dual-use export control: it tells you why an item is controlled, which destinations trigger a license, and whether a license exception is available. Here is what the code is, how to read it, and how to find yours.

What an ECCN actually is

The ECCN lives in the Export Administration Regulations (EAR), the rulebook for “dual-use” goods — items with both civilian and potential military or proliferation uses — administered by the Bureau of Industry and Security (BIS) at the U.S. Department of Commerce. Every controlled dual-use item is listed on the Commerce Control List (CCL), which is Supplement No. 1 to Part 774 of the EAR, and each entry carries an ECCN.

The EAR itself rests on permanent statutory footing. The Export Control Reform Act of 2018 (ECRA) gave the regulations a durable legal basis after decades of running on emergency executive authority, so the framework around the ECCN is stable even as individual entries change.

How to read the five characters

An ECCN is short but dense. Take 3A001 as an example:

The ten categories run from 0 (nuclear materials, facilities, and equipment) through 1 (materials, chemicals, microorganisms, and toxins), 2 (materials processing), 3 (electronics), 4 (computers), 5 (telecommunications and information security), 6 (lasers and sensors), 7 (navigation and avionics), 8 (marine), to 9 (aerospace and propulsion). The five product groups are A (equipment, assemblies, and components), B (test, inspection, and production equipment), C (materials), D (software), and E (technology). Read together, those two characters tell you what kind of thing the item is before you read the controls that apply to it.

What the ECCN tells you to do

The ECCN by itself does not say “license required.” It points you to the Reasons for Control listed in its CCL entry — national security, missile technology, chemical and biological weapons, anti-terrorism, regional stability, and others. You then take those reasons to the Commerce Country Chart to see whether a license is required for your specific destination. The same ECCN can ship license-free to a close ally and require a license to a country of concern.

The entry also tells you whether a license exception might let you ship without applying for an individual license, and it feeds your restricted-party screening. None of these steps work without the right ECCN first.

If your item has no ECCN: EAR99

Not every export carries an ECCN. If an item is subject to the EAR but does not match any entry on the Commerce Control List, it is designated EAR99 — a catch-all that covers most low-technology consumer goods. EAR99 items generally ship without a license, but the exception swallows the rule fast: you still may not ship to an embargoed country, a denied or sanctioned party, or a prohibited end-use such as weapons proliferation.

How to find your ECCN

There are three practical paths, from fastest to most certain:

1. Ask the manufacturer. The producer of the item has usually already classified it and can give you the ECCN directly.
2. Self-classify. Match your item’s technical parameters against the relevant CCL category and entry. This requires a real read of the technical specs, not a guess by analogy.
3. Request a ruling from BIS. Submit a classification request through BIS’s SNAP-R system; BIS reviews your technical documentation and issues a CCATS (Commodity Classification Automated Tracking System) number confirming the ECCN. Each request covers up to six items and must include enough detail for BIS to classify.

A common trap is assuming an ECCN by similarity to another product. Small technical differences — encryption strength, performance thresholds, materials — move items between entries, so classify on the actual specifications. For the full classification sequence around the ECCN, see how to classify your goods for export, and for why the stakes are high, why correct export classification matters.

ECCN vs. the other codes

Keep the ECCN distinct from the codes it travels with. The Harmonized System and Schedule B numbers describe an item for tariff and statistical purposes; the ECCN describes it for control purposes. A single product has both, and one being simple does not make the other simple — an everyday-looking component can still carry a controlling ECCN.

Frequently asked questions

How many characters is an ECCN? Five: a digit for the category, a letter for the product group, and three digits for the specific entry, as in 5A002.

Is EAR99 an ECCN? No. EAR99 is a designation for items subject to the EAR that are not listed on the Commerce Control List. It is not a CCL entry, and it is not a license-free pass to sanctioned destinations or parties.

Does an ECCN mean I need a license? Not by itself. The ECCN points to the reasons for control; you check those against the Commerce Country Chart and the end-user to decide whether a license is required for your shipment.

Who can give me a binding ECCN? Only BIS, through a classification request that results in a CCATS number. You may self-classify, but the CCATS is the authoritative determination.

Getting an ECCN wrong — or skipping it on an EAR99 assumption — is how routine shipments turn into enforcement files. Reidel Law Firm classifies dual-use items, confirms license requirements, and documents the basis so your determinations hold up.

Need certainty on how your products are controlled? Reidel Law Firm’s flat-fee Import/Export Compliance Memo classifies your goods, maps license requirements by destination, and documents the rationale. Get a flat-fee compliance memo →