CRAY COMMUNICATIONS A/S
Any device whose MAC address begins with 00:00:80 has a network interface built by CRAY COMMUNICATIONS A/S. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.
- OUI prefix
- 00:00:80
- Organization
- CRAY COMMUNICATIONS A/S
- Address
- SMEDEHOLM 12-14 DK
- Source
- IEEE OUI registry
Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.
Assignment history (1)
The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.
- 2026-07-17Assigned to "CRAY COMMUNICATIONS A/S"