MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
RE
IEEE Registrant 6 Prefixes
Resideo
Resideo manages 6 unique MAC address prefixes. These prefixes have a total block size of 100.7 million addresses.
The allocation includes the following types: CID(Company Identifier, not for globally unique applications) and MA-L(MAC Address Block Large, 16,777,216 addresses each).
The company registered its MAC address allocation on 09 November 2000, and the most recent update was made on 17 June 2026. These allocations support network identification and communication globally.
Unique prefixes 6
Block Size 100663290 (100.66 M)
First registration 09 November 2000
Last updated 17 June 2026
Entity Details
Unique prefixes 6
Block Size 100663290 (100.66 M)
First registration 09 November 2000
Last updated 17 June 2026
Types
CID: Block Type
Company Identifier. This prefix will not be used for globally unique applications. Number of address 2^24 (~16 Million)MA-L: Block Type
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)