MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
OpenAI
MAC address prefix 8C:20:F1 is registered to OpenAI, located at 1455 3rd StreetSan Francisco CA 94158US.
This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses
The prefix was registered on 26 May 2026, and no subsequent updates have been recorded.
OUI: 8C:20:F1
Vendor name: OpenAI
Address:
Assignment Type MA-L 1455 3rd Street
San Francisco CA 94158
US.
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Initial registration: 26 May 2026
