ECCN 4D001

NSRSCCAT

Software as follows .

Category: 4 - ComputersProduct Group: D - SoftwareLast Updated: 2026-04-10

What This ECCN Covers

ECCN 4D001 controls software specially designed or modified for the development, production, or use of equipment controlled under 4A001 through 4A004. This includes operating systems, compilers, and application software optimized for controlled computing hardware.

Who needs to check this?

Software developers creating tools for high-performance computing, parallel processing frameworks, or firmware for controlled computer hardware.

Compliance tip

Publicly available software (e.g., open-source) is generally excluded from EAR controls under the "published" exclusion in EAR §734.7. Verify whether your software qualifies.

Reviewed by Jack Tan · Last reviewed: May 8, 2026

Items Covered

  • a."Software" specially designed or modified for the "development" or "production", of equipment or "software" controlled by 4A001, 4A003, 4A004, 4A005 or 4D (except 4D090, 4D906, 4D980, 4D993 or 4D994).
  • b."Software", other than that controlled by 4D001.a, specially designed or modified for the "development" or "production" of equipment as follows:
  • 1. "Digital computers" having an "Adjusted Peak Performance" ("APP") exceeding 24 Weighted TeraFLOPS (WT);
  • 2. "Electronic assemblies" specially designed or modified for enhancing performance by aggregation of processors so that the "APP" of the aggregation exceeds the limit in 4D001.b.1.

Control Reasons

NSNational Security

Items controlled for national security reasons under multilateral export control regimes.

Column 1: YesColumn 2: No
RSRegional Stability

Items controlled for regional stability reasons.

Column 1: YesColumn 2: No
CCCrime Control

Items controlled for crime control and detection purposes.

Column 1: YesColumn 2: No
ATAnti-Terrorism

Items controlled for anti-terrorism reasons. Most items on the CCL have AT controls.

Column 1: YesColumn 2: No

Disclaimer

This information is for reference only. For official classifications, consult BIS or a qualified export control professional.

Official Reference