Every MAC/OUI block IEEE has registered to this exact organization name, combined.
Registered nameSpirent Communications
Total assignments3
Total address capacity12,288
First tracked hereAug 22, 2026
Last changed hereAug 22, 2026
SourceIEEE Registration Authority
Vendor registration identifies the organization holding a block, not a specific device model, product line, or manufacturing date. This page combines every block IEEE has registered under this exact organization name; it doesn't mean every address in every listed block is currently shipping in a real device.
About Spirent Communications
Spirent was a British telecom and network testing company based in Crawley. Keysight acquired it in October 2025.
Devices that use these prefixes
- Network test and measurement equipment
Related companies
- Keysight Technologies, Inc.: the company that acquired it
Assignments by type
| Type | Count |
|---|---|
| IAB | 3 |
Countries in IEEE's registration records
| Country | Blocks |
|---|---|
| 🇺🇸 United States | 3 |
Download this organization's blocks
Get just these assignments as CSV or JSON, generated fresh from the live registry on every request.
3 registered prefixes
Page 1 of 1