MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
Microsoft Corporation
MAC address prefix CA:12:5C is registered to Microsoft Corporation, located at One Microsoft WayRedmond 98052-6399US.
This registration is classified as CID (Company Identifier), not for globally unique applications
The prefix was initially registered on 13 September 2017, with the most recent update made on 28 October 2025.
OUI: CA:12:5C
Vendor name: Microsoft Corporation
Address:
Assignment Type CID One Microsoft Way
Redmond 98052-6399
US.
Company Identifier. This prefix will not be used for globally unique applications. Number of address 2^24 (~16 Million)
Last updated: 28 October 2025
Initial registration: 13 September 2017
