MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
BN
IEEE Registrant 2 Prefixes
Brookhaven National Laboratory
Brookhaven National Laboratory manages 2 unique MAC address prefixes. These prefixes have a total block size of 1.1 million addresses.
The allocation includes the following types: IAB(Individual Address Block) and MA-M(MAC Address Block Medium, 1,048,576 addresses each).
The company registered its MAC address allocation on 21 February 2011, and the most recent update was made on 09 March 2026. These allocations support network identification and communication globally.
Unique prefixes 2
Block Size 1052670 (1.05 M)
First registration 21 February 2011
Last updated 09 March 2026
Entity Details
Unique prefixes 2
Block Size 1052670 (1.05 M)
First registration 21 February 2011
Last updated 09 March 2026
Types
IAB: Block Type
Individual Address Blocks. Number of address 2^24 (~16 Million)MA-M: Block Type
Mac Address Block Medium. Number of address 2^20 (~1 Million)Registered MAC Prefixes
All Organizationally Unique Identifiers and MAC ranges assigned to this vendor
| MAC Prefix | Type | Registration Date |
|---|---|---|
| 00:50:C2:61:1 | IAB | 2011-02-21 |
| 38:B1:4E:5 | MA-M | 2026-03-09 |