Integrated System Technologies Ltd
Any device whose MAC address begins with 1C:91:79 has a network interface built by Integrated System Technologies Ltd. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.
- OUI prefix
- 1C:91:79
- Organization
- Integrated System Technologies Ltd
- Address
- Suite 5 Birch House Aldridge West Midlands GB WS9 0NF
- 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 "Integrated System Technologies Ltd"